65978112 has 36 divisors (see below), whose sum is σ = 175600040. Its totient is φ = 21992448.

The previous prime is 65978093. The next prime is 65978113. The reversal of 65978112 is 21187956.

It is a super-2 number, since 2×65978112² = 8706222526169088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65978113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42187 + ... + 43722.

Almost surely, 2^65978112 is an apocalyptic number.

It is an amenable number.

65978112 is an abundant number, since it is smaller than the sum of its proper divisors (109621928).

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

65978112 is an equidigital number, since it uses as much as digits as its factorization.

65978112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85928 (or 85914 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 65978112 is about 8122.6911796522. The cubic root of 65978112 is about 404.0793230513.

The spelling of 65978112 in words is "sixty-five million, nine hundred seventy-eight thousand, one hundred twelve".