667556383 has 8 divisors (see below), whose sum is σ = 736441776. Its totient is φ = 601176000.

The previous prime is 667556377. The next prime is 667556389. The reversal of 667556383 is 383655766.

It is an interprime number because it is at equal distance from previous prime (667556377) and next prime (667556389).

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

It is a cyclic number.

It is not a de Polignac number, because 667556383 - 2⁹ = 667555871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667556389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625693 + ... + 626758.

It is an arithmetic number, because the mean of its divisors is an integer number (92055222).

Almost surely, 2^667556383 is an apocalyptic number.

667556383 is a deficient number, since it is larger than the sum of its proper divisors (68885393).

667556383 is a wasteful number, since it uses less digits than its factorization.

667556383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252505.

The product of its digits is 2721600, while the sum is 49.

The square root of 667556383 is about 25837.1125128177. The cubic root of 667556383 is about 873.9689113878.

The spelling of 667556383 in words is "six hundred sixty-seven million, five hundred fifty-six thousand, three hundred eighty-three".