64956155 has 32 divisors (see below), whose sum is σ = 91065600. Its totient is φ = 43977600.

The previous prime is 64956131. The next prime is 64956197. The reversal of 64956155 is 55165946.

It is not a de Polignac number, because 64956155 - 2²² = 60761851 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63236 + ... + 64254.

It is an arithmetic number, because the mean of its divisors is an integer number (2845800).

Almost surely, 2^64956155 is an apocalyptic number.

64956155 is a deficient number, since it is larger than the sum of its proper divisors (26109445).

64956155 is a wasteful number, since it uses less digits than its factorization.

64956155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115.

The product of its digits is 162000, while the sum is 41.

The square root of 64956155 is about 8059.5381381317. The cubic root of 64956155 is about 401.9821510519.

The spelling of 64956155 in words is "sixty-four million, nine hundred fifty-six thousand, one hundred fifty-five".