65690660 has 24 divisors (see below), whose sum is σ = 157657920. Its totient is φ = 22522464.

The previous prime is 65690641. The next prime is 65690663. The reversal of 65690660 is 6609656.

65690660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65690660² = 8630525622471200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65690663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234470 + ... + 234749.

It is an arithmetic number, because the mean of its divisors is an integer number (6569080).

Almost surely, 2^65690660 is an apocalyptic number.

It is an amenable number.

65690660 is an abundant number, since it is smaller than the sum of its proper divisors (91967260).

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

65690660 is a wasteful number, since it uses less digits than its factorization.

65690660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469235 (or 469233 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 65690660 is about 8104.9774830039. The cubic root of 65690660 is about 403.4916407609.

The spelling of 65690660 in words is "sixty-five million, six hundred ninety thousand, six hundred sixty".