65961115 has 16 divisors (see below), whose sum is σ = 87816960. Its totient is φ = 47156320.

The previous prime is 65961107. The next prime is 65961131. The reversal of 65961115 is 51116956.

It is not a de Polignac number, because 65961115 - 2³ = 65961107 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, 6919 + ... + 13408.

It is an arithmetic number, because the mean of its divisors is an integer number (5488560).

Almost surely, 2^65961115 is an apocalyptic number.

65961115 is a deficient number, since it is larger than the sum of its proper divisors (21855845).

65961115 is a wasteful number, since it uses less digits than its factorization.

65961115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20402.

The product of its digits is 8100, while the sum is 34.

The square root of 65961115 is about 8121.6448457194. The cubic root of 65961115 is about 404.0446210069.

The spelling of 65961115 in words is "sixty-five million, nine hundred sixty-one thousand, one hundred fifteen".