64961115 has 16 divisors (see below), whose sum is σ = 104244000. Its totient is φ = 34543872.

The previous prime is 64961111. The next prime is 64961129. The reversal of 64961115 is 51116946.

It is not a de Polignac number, because 64961115 - 2² = 64961111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64961111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 970 + ... + 11439.

It is an arithmetic number, because the mean of its divisors is an integer number (6515250).

Almost surely, 2^64961115 is an apocalyptic number.

64961115 is a deficient number, since it is larger than the sum of its proper divisors (39282885).

64961115 is a wasteful number, since it uses less digits than its factorization.

64961115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12766.

The product of its digits is 6480, while the sum is 33.

The square root of 64961115 is about 8059.8458421982. The cubic root of 64961115 is about 401.9923824699.

The spelling of 64961115 in words is "sixty-four million, nine hundred sixty-one thousand, one hundred fifteen".