667233945 has 48 divisors (see below), whose sum is σ = 1327577472. Its totient is φ = 303678720.

The previous prime is 667233923. The next prime is 667233961. The reversal of 667233945 is 549332766.

It is not a de Polignac number, because 667233945 - 2⁸ = 667233689 is a prime.

It is a super-2 number, since 2×667233945² = 890402274720526050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 667233945.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68850 + ... + 77940.

It is an arithmetic number, because the mean of its divisors is an integer number (27657864).

Almost surely, 2^667233945 is an apocalyptic number.

It is an amenable number.

667233945 is a deficient number, since it is larger than the sum of its proper divisors (660343527).

667233945 is a wasteful number, since it uses less digits than its factorization.

667233945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9342 (or 9339 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 667233945 is about 25830.8719365026. The cubic root of 667233945 is about 873.8281761240.

The spelling of 667233945 in words is "six hundred sixty-seven million, two hundred thirty-three thousand, nine hundred forty-five".