64660154 has 36 divisors (see below), whose sum is σ = 111581946. Its totient is φ = 27931824.

The previous prime is 64660151. The next prime is 64660177. The reversal of 64660154 is 45106646.

It can be written as a sum of positive squares in only one way, i.e., 62173225 + 2486929 = 7885^2 + 1577^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64660154.

It is not an unprimeable number, because it can be changed into a prime (64660151) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 778997 + ... + 779079.

Almost surely, 2^64660154 is an apocalyptic number.

64660154 is a deficient number, since it is larger than the sum of its proper divisors (46921792).

64660154 is a wasteful number, since it uses less digits than its factorization.

64660154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 64660154 is about 8041.1537729358. The cubic root of 64660154 is about 401.3706189781.

The spelling of 64660154 in words is "sixty-four million, six hundred sixty thousand, one hundred fifty-four".