665502630 has 32 divisors (see below), whose sum is σ = 1720069344. Its totient is φ = 163815936.

The previous prime is 665502623. The next prime is 665502641. The reversal of 665502630 is 36205566.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 665502591 and 665502600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852819 + ... + 853598.

It is an arithmetic number, because the mean of its divisors is an integer number (53752167).

Almost surely, 2^665502630 is an apocalyptic number.

665502630 is an abundant number, since it is smaller than the sum of its proper divisors (1054566714).

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

665502630 is a wasteful number, since it uses less digits than its factorization.

665502630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706440.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 665502630 is about 25797.3376533316. The cubic root of 665502630 is about 873.0717286815.

The spelling of 665502630 in words is "six hundred sixty-five million, five hundred two thousand, six hundred thirty".