705138492870 has 96 divisors (see below), whose sum is σ = 2106239016960. Its totient is φ = 160330639680.

The previous prime is 705138492869. The next prime is 705138492893. The reversal of 705138492870 is 78294831507.

It is a happy number.

705138492870 is a `hidden beast` number, since 7 + 0 + 51 + 38 + 492 + 8 + 70 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2809690 + ... + 3050349.

It is an arithmetic number, because the mean of its divisors is an integer number (21939989760).

Almost surely, 2^705138492870 is an apocalyptic number.

705138492870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

705138492870 is an abundant number, since it is smaller than the sum of its proper divisors (1401100524090).

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

705138492870 is a wasteful number, since it uses less digits than its factorization.

705138492870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5860250 (or 5860247 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 705138492870 in words is "seven hundred five billion, one hundred thirty-eight million, four hundred ninety-two thousand, eight hundred seventy".