870521674 has 12 divisors (see below), whose sum is σ = 1435282002. Its totient is φ = 395691560.

The previous prime is 870521671. The next prime is 870521683. The reversal of 870521674 is 476125078.

It can be written as a sum of positive squares in only one way, i.e., 502073649 + 368448025 = 22407^2 + 19195^2 .

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

It is not an unprimeable number, because it can be changed into a prime (870521671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1798357 + ... + 1798840.

Almost surely, 2^870521674 is an apocalyptic number.

870521674 is a deficient number, since it is larger than the sum of its proper divisors (564760328).

870521674 is a wasteful number, since it uses less digits than its factorization.

870521674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597221 (or 3597210 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 870521674 is about 29504.6042847553. The cubic root of 870521674 is about 954.8310416264.

The spelling of 870521674 in words is "eight hundred seventy million, five hundred twenty-one thousand, six hundred seventy-four".