665430522 has 16 divisors (see below), whose sum is σ = 1332888480. Its totient is φ = 221472272.

The previous prime is 665430511. The next prime is 665430581. The reversal of 665430522 is 225034566.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80193 + ... + 88100.

It is an arithmetic number, because the mean of its divisors is an integer number (83305530).

Almost surely, 2^665430522 is an apocalyptic number.

665430522 is an abundant number, since it is smaller than the sum of its proper divisors (667457958).

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

665430522 is a wasteful number, since it uses less digits than its factorization.

665430522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168957.

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 665430522 is about 25795.9400293922. The cubic root of 665430522 is about 873.0401947565.

The spelling of 665430522 in words is "six hundred sixty-five million, four hundred thirty thousand, five hundred twenty-two".