764498390670 has 256 divisors, whose sum is σ = 2347808716800. Its totient is φ = 173403555840.

The previous prime is 764498390633. The next prime is 764498390671. The reversal of 764498390670 is 76093894467.

764498390670 is a `hidden beast` number, since 76 + 4 + 498 + 3 + 9 + 0 + 6 + 70 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 764498390598 and 764498390607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764498390671) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 183023622 + ... + 183027798.

It is an arithmetic number, because the mean of its divisors is an integer number (9171127800).

Almost surely, 2^764498390670 is an apocalyptic number.

764498390670 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 764498390670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173904358400).

764498390670 is an abundant number, since it is smaller than the sum of its proper divisors (1583310326130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

764498390670 is a wasteful number, since it uses less digits than its factorization.

764498390670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4920 (or 4914 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 764498390670 in words is "seven hundred sixty-four billion, four hundred ninety-eight million, three hundred ninety thousand, six hundred seventy".