661102504 has 16 divisors (see below), whose sum is σ = 1249031520. Its totient is φ = 328027440.

The previous prime is 661102499. The next prime is 661102529. The reversal of 661102504 is 405201166.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314364 + ... + 316459.

It is an arithmetic number, because the mean of its divisors is an integer number (78064470).

Almost surely, 2^661102504 is an apocalyptic number.

It is an amenable number.

661102504 is a deficient number, since it is larger than the sum of its proper divisors (587929016).

661102504 is a wasteful number, since it uses less digits than its factorization.

661102504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630960 (or 630956 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 661102504 is about 25711.9136588469. The cubic root of 661102504 is about 871.1432998127.

The spelling of 661102504 in words is "six hundred sixty-one million, one hundred two thousand, five hundred four".