670338621 has 12 divisors (see below), whose sum is σ = 980524480. Its totient is φ = 441235080.

The previous prime is 670338587. The next prime is 670338623. The reversal of 670338621 is 126833076.

It is a happy number.

It is not a de Polignac number, because 670338621 - 2¹⁰ = 670337597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670338623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470695 + ... + 472116.

Almost surely, 2^670338621 is an apocalyptic number.

It is an amenable number.

670338621 is a deficient number, since it is larger than the sum of its proper divisors (310185859).

670338621 is a wasteful number, since it uses less digits than its factorization.

670338621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942896 (or 942893 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 670338621 is about 25890.8984201012. The cubic root of 670338621 is about 875.1814028248.

The spelling of 670338621 in words is "six hundred seventy million, three hundred thirty-eight thousand, six hundred twenty-one".