785997870 has 64 divisors (see below), whose sum is σ = 2225442816. Its totient is φ = 173859840.

The previous prime is 785997859. The next prime is 785997881. The reversal of 785997870 is 78799587.

785997870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (785997859) and next prime (785997881).

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, 53859 + ... + 66878.

It is an arithmetic number, because the mean of its divisors is an integer number (34772544).

Almost surely, 2^785997870 is an apocalyptic number.

785997870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

785997870 is an abundant number, since it is smaller than the sum of its proper divisors (1439444946).

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

785997870 is a wasteful number, since it uses less digits than its factorization.

785997870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120785.

The product of its (nonzero) digits is 8890560, while the sum is 60.

The square root of 785997870 is about 28035.6535504347. The cubic root of 785997870 is about 922.8698467813.

The spelling of 785997870 in words is "seven hundred eighty-five million, nine hundred ninety-seven thousand, eight hundred seventy".