64666088 has 16 divisors (see below), whose sum is σ = 121417380. Its totient is φ = 32288128.

The previous prime is 64666081. The next prime is 64666097. The reversal of 64666088 is 88066646.

It can be written as a sum of positive squares in 2 ways, for example, as 64609444 + 56644 = 8038^2 + 238^2 .

It is not an unprimeable number, because it can be changed into a prime (64666081) 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, 956 + ... + 11412.

Almost surely, 2^64666088 is an apocalyptic number.

It is an amenable number.

64666088 is a deficient number, since it is larger than the sum of its proper divisors (56751292).

64666088 is a wasteful number, since it uses less digits than its factorization.

64666088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11236 (or 11232 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 64666088 is about 8041.5227413718. The cubic root of 64666088 is about 401.3828968146.

The spelling of 64666088 in words is "sixty-four million, six hundred sixty-six thousand, eighty-eight".