667733379 has 16 divisors (see below), whose sum is σ = 909660672. Its totient is φ = 435528288.

The previous prime is 667733351. The next prime is 667733399. The reversal of 667733379 is 973337766.

It is not a de Polignac number, because 667733379 - 2¹⁹ = 667209091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667733329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52632 + ... + 64074.

It is an arithmetic number, because the mean of its divisors is an integer number (56853792).

Almost surely, 2^667733379 is an apocalyptic number.

667733379 is a deficient number, since it is larger than the sum of its proper divisors (241927293).

667733379 is a wasteful number, since it uses less digits than its factorization.

667733379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11866.

The product of its digits is 3000564, while the sum is 51.

The square root of 667733379 is about 25840.5375137593. The cubic root of 667733379 is about 874.0461459785.

The spelling of 667733379 in words is "six hundred sixty-seven million, seven hundred thirty-three thousand, three hundred seventy-nine".