667546245 has 16 divisors (see below), whose sum is σ = 1186749120. Its totient is φ = 356024592.

The previous prime is 667546223. The next prime is 667546279. The reversal of 667546245 is 542645766.

667546245 is a `hidden beast` number, since 6 + 67 + 546 + 2 + 45 = 666.

It is not a de Polignac number, because 667546245 - 2¹¹ = 667544197 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 667546245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2472259 + ... + 2472528.

It is an arithmetic number, because the mean of its divisors is an integer number (74171820).

Almost surely, 2^667546245 is an apocalyptic number.

It is an amenable number.

667546245 is a deficient number, since it is larger than the sum of its proper divisors (519202875).

667546245 is a wasteful number, since it uses less digits than its factorization.

667546245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4944801 (or 4944795 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The square root of 667546245 is about 25836.9163214189. The cubic root of 667546245 is about 873.9644871215.

The spelling of 667546245 in words is "six hundred sixty-seven million, five hundred forty-six thousand, two hundred forty-five".