64657552 has 20 divisors (see below), whose sum is σ = 128188720. Its totient is φ = 31576608.

The previous prime is 64657547. The next prime is 64657553. The reversal of 64657552 is 25575646.

It is not an unprimeable number, because it can be changed into a prime (64657553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46302 + ... + 47677.

It is an arithmetic number, because the mean of its divisors is an integer number (6409436).

Almost surely, 2^64657552 is an apocalyptic number.

It is an amenable number.

64657552 is a deficient number, since it is larger than the sum of its proper divisors (63531168).

64657552 is a wasteful number, since it uses less digits than its factorization.

64657552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94030 (or 94024 counting only the distinct ones).

The product of its digits is 252000, while the sum is 40.

The square root of 64657552 is about 8040.9919786056. The cubic root of 64657552 is about 401.3652350320.

The spelling of 64657552 in words is "sixty-four million, six hundred fifty-seven thousand, five hundred fifty-two".