836420680 has 16 divisors (see below), whose sum is σ = 1881946620. Its totient is φ = 334568256.

The previous prime is 836420677. The next prime is 836420701. The reversal of 836420680 is 86024638.

It can be written as a sum of positive squares in 2 ways, for example, as 795127204 + 41293476 = 28198^2 + 6426^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10455219 + ... + 10455298.

Almost surely, 2^836420680 is an apocalyptic number.

It is an amenable number.

836420680 is an abundant number, since it is smaller than the sum of its proper divisors (1045525940).

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

836420680 is a wasteful number, since it uses less digits than its factorization.

836420680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20910528 (or 20910524 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 836420680 is about 28920.9384356732. The cubic root of 836420680 is about 942.1967184573.

The spelling of 836420680 in words is "eight hundred thirty-six million, four hundred twenty thousand, six hundred eighty".