64635155 has 16 divisors (see below), whose sum is σ = 86225664. Its totient is φ = 46189440.

The previous prime is 64635133. The next prime is 64635163. The reversal of 64635155 is 55153646.

It is not a de Polignac number, because 64635155 - 2¹⁰ = 64634131 is a prime.

It is a Duffinian number.

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, 14024 + ... + 18053.

It is an arithmetic number, because the mean of its divisors is an integer number (5389104).

Almost surely, 2^64635155 is an apocalyptic number.

64635155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64635155 is a deficient number, since it is larger than the sum of its proper divisors (21590509).

64635155 is a wasteful number, since it uses less digits than its factorization.

64635155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32126.

The product of its digits is 54000, while the sum is 35.

The square root of 64635155 is about 8039.5991815513. The cubic root of 64635155 is about 401.3188861521.

The spelling of 64635155 in words is "sixty-four million, six hundred thirty-five thousand, one hundred fifty-five".