65669660 has 24 divisors (see below), whose sum is σ = 157607520. Its totient is φ = 22515264.

The previous prime is 65669651. The next prime is 65669663. The reversal of 65669660 is 6696656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65669663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234395 + ... + 234674.

It is an arithmetic number, because the mean of its divisors is an integer number (6566980).

Almost surely, 2^65669660 is an apocalyptic number.

It is an amenable number.

65669660 is an abundant number, since it is smaller than the sum of its proper divisors (91937860).

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

65669660 is a wasteful number, since it uses less digits than its factorization.

65669660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469085 (or 469083 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 65669660 is about 8103.6818792448. The cubic root of 65669660 is about 403.4486400891.

The spelling of 65669660 in words is "sixty-five million, six hundred sixty-nine thousand, six hundred sixty".