870735615 has 32 divisors (see below), whose sum is σ = 1441251840. Its totient is φ = 448550784.

The previous prime is 870735581. The next prime is 870735673. The reversal of 870735615 is 516537078.

It is not a de Polignac number, because 870735615 - 2¹⁴ = 870719231 is a prime.

It is a super-2 number, since 2×870735615² = 1516361022458856450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71502 + ... + 82788.

It is an arithmetic number, because the mean of its divisors is an integer number (45039120).

Almost surely, 2^870735615 is an apocalyptic number.

870735615 is a deficient number, since it is larger than the sum of its proper divisors (570516225).

870735615 is a wasteful number, since it uses less digits than its factorization.

870735615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11471.

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 870735615 is about 29508.2296148041. The cubic root of 870735615 is about 954.9092555609.

The spelling of 870735615 in words is "eight hundred seventy million, seven hundred thirty-five thousand, six hundred fifteen".