65123660 has 24 divisors (see below), whose sum is σ = 156297120. Its totient is φ = 22328064.

The previous prime is 65123609. The next prime is 65123671. The reversal of 65123660 is 6632156.

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, 232445 + ... + 232724.

It is an arithmetic number, because the mean of its divisors is an integer number (6512380).

Almost surely, 2^65123660 is an apocalyptic number.

It is an amenable number.

65123660 is an abundant number, since it is smaller than the sum of its proper divisors (91173460).

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

65123660 is a wasteful number, since it uses less digits than its factorization.

65123660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465185 (or 465183 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 65123660 is about 8069.9231718772. The cubic root of 65123660 is about 402.3273902061.

The spelling of 65123660 in words is "sixty-five million, one hundred twenty-three thousand, six hundred sixty".