672555686 has 8 divisors (see below), whose sum is σ = 1100545704. Its totient is φ = 305707120.

The previous prime is 672555629. The next prime is 672555707. The reversal of 672555686 is 686555276.

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

It is a Curzon number.

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, 15285335 + ... + 15285378.

It is an arithmetic number, because the mean of its divisors is an integer number (137568213).

Almost surely, 2^672555686 is an apocalyptic number.

672555686 is a deficient number, since it is larger than the sum of its proper divisors (427990018).

672555686 is a wasteful number, since it uses less digits than its factorization.

672555686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30570726.

The product of its digits is 3024000, while the sum is 50.

The square root of 672555686 is about 25933.6786052423. The cubic root of 672555686 is about 876.1451937492.

The spelling of 672555686 in words is "six hundred seventy-two million, five hundred fifty-five thousand, six hundred eighty-six".