665708602474 has 8 divisors (see below), whose sum is σ = 998672771808. Its totient is φ = 332817678540.

The previous prime is 665708602337. The next prime is 665708602487. The reversal of 665708602474 is 474206807566.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 18288622 + ... + 18324985.

It is an arithmetic number, because the mean of its divisors is an integer number (124834096476).

Almost surely, 2^665708602474 is an apocalyptic number.

665708602474 is a deficient number, since it is larger than the sum of its proper divisors (332964169334).

665708602474 is a wasteful number, since it uses less digits than its factorization.

665708602474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36622700.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 665708602474 in words is "six hundred sixty-five billion, seven hundred eight million, six hundred two thousand, four hundred seventy-four".