670206920 has 16 divisors (see below), whose sum is σ = 1507965660. Its totient is φ = 268082752.

The previous prime is 670206919. The next prime is 670206947. The reversal of 670206920 is 29602076.

It can be written as a sum of positive squares in 2 ways, for example, as 669463876 + 743044 = 25874^2 + 862^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8377547 + ... + 8377626.

Almost surely, 2^670206920 is an apocalyptic number.

It is an amenable number.

670206920 is an abundant number, since it is smaller than the sum of its proper divisors (837758740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670206920 is a wasteful number, since it uses less digits than its factorization.

670206920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16755184 (or 16755180 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 670206920 is about 25888.3549110406. The cubic root of 670206920 is about 875.1240836274.

Adding to 670206920 its reverse (29602076), we get a palindrome (699808996).

The spelling of 670206920 in words is "six hundred seventy million, two hundred six thousand, nine hundred twenty".