64651755 has 16 divisors (see below), whose sum is σ = 118220544. Its totient is φ = 29555040.

The previous prime is 64651739. The next prime is 64651789. The reversal of 64651755 is 55715646.

It is not a de Polignac number, because 64651755 - 2⁴ = 64651739 is a prime.

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, 307761 + ... + 307970.

It is an arithmetic number, because the mean of its divisors is an integer number (7388784).

Almost surely, 2^64651755 is an apocalyptic number.

64651755 is a deficient number, since it is larger than the sum of its proper divisors (53568789).

64651755 is a wasteful number, since it uses less digits than its factorization.

64651755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615746.

The product of its digits is 126000, while the sum is 39.

The square root of 64651755 is about 8040.6315050498. The cubic root of 64651755 is about 401.3532396103.

The spelling of 64651755 in words is "sixty-four million, six hundred fifty-one thousand, seven hundred fifty-five".