870499357 has 30 divisors (see below), whose sum is σ = 1100227198. Its totient is φ = 684622512.

The previous prime is 870499319. The next prime is 870499363. The reversal of 870499357 is 753994078.

870499357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 602653401 + 267845956 = 24549^2 + 16366^2 .

It is a de Polignac number, because none of the positive numbers 2^k-870499357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870499387) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 5212488 + ... + 5212654.

Almost surely, 2^870499357 is an apocalyptic number.

It is an amenable number.

870499357 is a deficient number, since it is larger than the sum of its proper divisors (229727841).

870499357 is an frugal number, since it uses more digits than its factorization.

870499357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 870499357 is about 29504.2260871218. The cubic root of 870499357 is about 954.8228820951.

Multiplying 870499357 by its sum of digits (52), we get a square (45265966564 = 212758²).

The spelling of 870499357 in words is "eight hundred seventy million, four hundred ninety-nine thousand, three hundred fifty-seven".