667579383 has 12 divisors (see below), whose sum is σ = 1015033240. Its totient is φ = 421628976.

The previous prime is 667579369. The next prime is 667579427. The reversal of 667579383 is 383975766.

667579383 is a `hidden beast` number, since 6 + 67 + 579 + 3 + 8 + 3 = 666.

It is not a de Polignac number, because 667579383 - 2⁵ = 667579351 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 (667579883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1951816 + ... + 1952157.

Almost surely, 2^667579383 is an apocalyptic number.

667579383 is a deficient number, since it is larger than the sum of its proper divisors (347453857).

667579383 is a wasteful number, since it uses less digits than its factorization.

667579383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903998 (or 3903995 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 667579383 is about 25837.5576051607. The cubic root of 667579383 is about 873.9789485196.

The spelling of 667579383 in words is "six hundred sixty-seven million, five hundred seventy-nine thousand, three hundred eighty-three".