64857792 has 112 divisors (see below), whose sum is σ = 188732160. Its totient is φ = 19565568.

The previous prime is 64857787. The next prime is 64857827. The reversal of 64857792 is 29775846.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83518 + ... + 84290.

Almost surely, 2^64857792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64857792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94366080).

64857792 is an abundant number, since it is smaller than the sum of its proper divisors (123874368).

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

64857792 is a wasteful number, since it uses less digits than its factorization.

64857792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 820 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The square root of 64857792 is about 8053.4335534603. The cubic root of 64857792 is about 401.7791415723.

The spelling of 64857792 in words is "sixty-four million, eight hundred fifty-seven thousand, seven hundred ninety-two".