64974566760 has 128 divisors (see below), whose sum is σ = 205528579200. Its totient is φ = 16386969600.

The previous prime is 64974566681. The next prime is 64974566773. The reversal of 64974566760 is 6766547946.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 64974566694 and 64974566703.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1346572 + ... + 1393988.

It is an arithmetic number, because the mean of its divisors is an integer number (1605692025).

Almost surely, 2^64974566760 is an apocalyptic number.

64974566760 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 64974566760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102764289600).

64974566760 is an abundant number, since it is smaller than the sum of its proper divisors (140554012440).

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

64974566760 is a wasteful number, since it uses less digits than its factorization.

64974566760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48051 (or 48047 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 60.

The spelling of 64974566760 in words is "sixty-four billion, nine hundred seventy-four million, five hundred sixty-six thousand, seven hundred sixty".