665607378702 has 32 divisors (see below), whose sum is σ = 1522019545344. Its totient is φ = 190094630400.

The previous prime is 665607378701. The next prime is 665607378707. The reversal of 665607378702 is 207873706566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665607378701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3185299 + ... + 3387822.

It is an arithmetic number, because the mean of its divisors is an integer number (47563110792).

Almost surely, 2^665607378702 is an apocalyptic number.

665607378702 is an abundant number, since it is smaller than the sum of its proper divisors (856412166642).

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

665607378702 is a wasteful number, since it uses less digits than its factorization.

665607378702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575544.

The product of its (nonzero) digits is 17781120, while the sum is 57.

The spelling of 665607378702 in words is "six hundred sixty-five billion, six hundred seven million, three hundred seventy-eight thousand, seven hundred two".