667502345 has 16 divisors (see below), whose sum is σ = 823414032. Its totient is φ = 519152640.

The previous prime is 667502327. The next prime is 667502359. The reversal of 667502345 is 543205766.

It can be written as a sum of positive squares in 8 ways, for example, as 119333776 + 548168569 = 10924^2 + 23413^2 .

It is not a de Polignac number, because 667502345 - 2¹⁸ = 667240201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667502299 and 667502308.

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, 54509 + ... + 65621.

It is an arithmetic number, because the mean of its divisors is an integer number (51463377).

Almost surely, 2^667502345 is an apocalyptic number.

It is an amenable number.

667502345 is a deficient number, since it is larger than the sum of its proper divisors (155911687).

667502345 is a wasteful number, since it uses less digits than its factorization.

667502345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11452.

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 667502345 is about 25836.0667478624. The cubic root of 667502345 is about 873.9453284578.

The spelling of 667502345 in words is "six hundred sixty-seven million, five hundred two thousand, three hundred forty-five".