670061620 has 12 divisors (see below), whose sum is σ = 1407129444. Its totient is φ = 268024640.

The previous prime is 670061611. The next prime is 670061701. The reversal of 670061620 is 26160076.

It can be written as a sum of positive squares in 2 ways, for example, as 298805796 + 371255824 = 17286^2 + 19268^2 .

It is a congruent number.

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, 16751521 + ... + 16751560.

It is an arithmetic number, because the mean of its divisors is an integer number (117260787).

Almost surely, 2^670061620 is an apocalyptic number.

It is an amenable number.

670061620 is an abundant number, since it is smaller than the sum of its proper divisors (737067824).

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

670061620 is a wasteful number, since it uses less digits than its factorization.

670061620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33503090 (or 33503088 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 670061620 is about 25885.5484778670. The cubic root of 670061620 is about 875.0608371306.

The spelling of 670061620 in words is "six hundred seventy million, sixty-one thousand, six hundred twenty".