65578116 has 24 divisors (see below), whose sum is σ = 153213984. Its totient is φ = 21831040.

The previous prime is 65578099. The next prime is 65578133. The reversal of 65578116 is 61187556.

It is an interprime number because it is at equal distance from previous prime (65578099) and next prime (65578133).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7471 + ... + 13673.

It is an arithmetic number, because the mean of its divisors is an integer number (6383916).

Almost surely, 2^65578116 is an apocalyptic number.

It is an amenable number.

65578116 is an abundant number, since it is smaller than the sum of its proper divisors (87635868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65578116 is a wasteful number, since it uses less digits than its factorization.

65578116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7091 (or 7089 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 65578116 is about 8098.0316126822. The cubic root of 65578116 is about 403.2610827636.

The spelling of 65578116 in words is "sixty-five million, five hundred seventy-eight thousand, one hundred sixteen".