64675655 has 64 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 41395200.

The previous prime is 64675649. The next prime is 64675673. The reversal of 64675655 is 55657646.

It is not a de Polignac number, because 64675655 - 2¹² = 64671559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1504064 + ... + 1504106.

It is an arithmetic number, because the mean of its divisors is an integer number (1496880).

Almost surely, 2^64675655 is an apocalyptic number.

64675655 is a deficient number, since it is larger than the sum of its proper divisors (31124665).

64675655 is a wasteful number, since it uses less digits than its factorization.

64675655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152.

The product of its digits is 756000, while the sum is 44.

The square root of 64675655 is about 8042.1175693968. The cubic root of 64675655 is about 401.4026899857.

Subtracting from 64675655 its reverse (55657646), we obtain a square (9018009 = 3003²).

The spelling of 64675655 in words is "sixty-four million, six hundred seventy-five thousand, six hundred fifty-five".