670538886 has 32 divisors (see below), whose sum is σ = 1363223040. Its totient is φ = 219843936.

The previous prime is 670538863. The next prime is 670538893. The reversal of 670538886 is 688835076.

It is a congruent number.

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, 128745 + ... + 133851.

It is an arithmetic number, because the mean of its divisors is an integer number (42600720).

Almost surely, 2^670538886 is an apocalyptic number.

670538886 is an abundant number, since it is smaller than the sum of its proper divisors (692684154).

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

670538886 is a wasteful number, since it uses less digits than its factorization.

670538886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 670538886 is about 25894.7656100610. The cubic root of 670538886 is about 875.2685482103.

The spelling of 670538886 in words is "six hundred seventy million, five hundred thirty-eight thousand, eight hundred eighty-six".