670507438 has 16 divisors (see below), whose sum is σ = 1065984624. Its totient is φ = 315218560.

The previous prime is 670507429. The next prime is 670507459. The reversal of 670507438 is 834705076.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 670507438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26781 + ... + 45367.

It is an arithmetic number, because the mean of its divisors is an integer number (66624039).

Almost surely, 2^670507438 is an apocalyptic number.

670507438 is a deficient number, since it is larger than the sum of its proper divisors (395477186).

670507438 is a wasteful number, since it uses less digits than its factorization.

670507438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19667.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 670507438 is about 25894.1583759735. The cubic root of 670507438 is about 875.2548647505.

The spelling of 670507438 in words is "six hundred seventy million, five hundred seven thousand, four hundred thirty-eight".