65974660 has 24 divisors (see below), whose sum is σ = 138715416. Its totient is φ = 26357760.

The previous prime is 65974627. The next prime is 65974687. The reversal of 65974660 is 6647956.

It can be written as a sum of positive squares in 4 ways, for example, as 15507844 + 50466816 = 3938^2 + 7104^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21630 + ... + 24490.

It is an arithmetic number, because the mean of its divisors is an integer number (5779809).

Almost surely, 2^65974660 is an apocalyptic number.

It is an amenable number.

65974660 is an abundant number, since it is smaller than the sum of its proper divisors (72740756).

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

65974660 is a wasteful number, since it uses less digits than its factorization.

65974660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4023 (or 4021 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 65974660 is about 8122.4786857215. The cubic root of 65974660 is about 404.0722757336.

The spelling of 65974660 in words is "sixty-five million, nine hundred seventy-four thousand, six hundred sixty".