665080490 has 32 divisors (see below), whose sum is σ = 1244004480. Its totient is φ = 255701824.

The previous prime is 665080469. The next prime is 665080523. The reversal of 665080490 is 94080566.

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, 60779 + ... + 70881.

It is an arithmetic number, because the mean of its divisors is an integer number (38875140).

Almost surely, 2^665080490 is an apocalyptic number.

665080490 is a deficient number, since it is larger than the sum of its proper divisors (578923990).

665080490 is a wasteful number, since it uses less digits than its factorization.

665080490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10366.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 665080490 is about 25789.1545033954. The cubic root of 665080490 is about 872.8870880614.

The spelling of 665080490 in words is "six hundred sixty-five million, eighty thousand, four hundred ninety".