64656452 has 24 divisors (see below), whose sum is σ = 133486080. Its totient is φ = 26815680.

The previous prime is 64656451. The next prime is 64656479. The reversal of 64656452 is 25465646.

It is not an unprimeable number, because it can be changed into a prime (64656451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36377 + ... + 38112.

It is an arithmetic number, because the mean of its divisors is an integer number (5561920).

Almost surely, 2^64656452 is an apocalyptic number.

64656452 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

64656452 is an abundant number, since it is smaller than the sum of its proper divisors (68829628).

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

64656452 is a wasteful number, since it uses less digits than its factorization.

64656452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74531 (or 74529 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

The square root of 64656452 is about 8040.9235787937. The cubic root of 64656452 is about 401.3629589160.

The spelling of 64656452 in words is "sixty-four million, six hundred fifty-six thousand, four hundred fifty-two".