664235470080 has 1728 divisors, whose sum is σ = 2944517721600. Its totient is φ = 137339338752.

The previous prime is 664235470079. The next prime is 664235470103. The reversal of 664235470080 is 80074532466.

664235470080 is a `hidden beast` number, since 6 + 6 + 4 + 23 + 547 + 0 + 0 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3441634464 + ... + 3441634656.

Almost surely, 2^664235470080 is an apocalyptic number.

664235470080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664235470080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472258860800).

664235470080 is an abundant number, since it is smaller than the sum of its proper divisors (2280282251520).

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

664235470080 is a wasteful number, since it uses less digits than its factorization.

664235470080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 664235470080 in words is "six hundred sixty-four billion, two hundred thirty-five million, four hundred seventy thousand, eighty".