772870 has 32 divisors (see below), whose sum is σ = 1624896. Its totient is φ = 259200.

The previous prime is 772867. The next prime is 772903. The reversal of 772870 is 78277.

772870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4180 + ... + 4360.

It is an arithmetic number, because the mean of its divisors is an integer number (50778).

2⁷⁷²⁸⁷⁰ is an apocalyptic number.

772870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

772870 is an abundant number, since it is smaller than the sum of its proper divisors (852026).

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

772870 is a wasteful number, since it uses less digits than its factorization.

772870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 772870 is about 879.1302520105. The cubic root of 772870 is about 91.7702996906.

The spelling of 772870 in words is "seven hundred seventy-two thousand, eight hundred seventy".