661556062 has 8 divisors (see below), whose sum is σ = 1026552600. Its totient is φ = 319371864.

The previous prime is 661556059. The next prime is 661556083. The reversal of 661556062 is 260655166.

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

It is a congruent number.

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, 5703012 + ... + 5703127.

It is an arithmetic number, because the mean of its divisors is an integer number (128319075).

Almost surely, 2^661556062 is an apocalyptic number.

661556062 is a deficient number, since it is larger than the sum of its proper divisors (364996538).

661556062 is a wasteful number, since it uses less digits than its factorization.

661556062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11406170.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 661556062 is about 25720.7321435452. The cubic root of 661556062 is about 871.3424740139.

The spelling of 661556062 in words is "six hundred sixty-one million, five hundred fifty-six thousand, sixty-two".