665006264 has 32 divisors (see below), whose sum is σ = 1368148320. Its totient is φ = 301132416.

The previous prime is 665006263. The next prime is 665006273. The reversal of 665006264 is 462600566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665006263) 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, 54812 + ... + 65835.

It is an arithmetic number, because the mean of its divisors is an integer number (42754635).

Almost surely, 2^665006264 is an apocalyptic number.

It is an amenable number.

665006264 is an abundant number, since it is smaller than the sum of its proper divisors (703142056).

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

665006264 is a wasteful number, since it uses less digits than its factorization.

665006264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120719 (or 120715 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 665006264 is about 25787.7153699198. The cubic root of 665006264 is about 872.8546141336.

The spelling of 665006264 in words is "six hundred sixty-five million, six thousand, two hundred sixty-four".