981206856 has 48 divisors (see below), whose sum is σ = 3037070400. Its totient is φ = 280344672.

The previous prime is 981206843. The next prime is 981206903. The reversal of 981206856 is 658602189.

It is a super-2 number, since 2×981206856² = 1925533788522809472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972916 + ... + 973923.

It is an arithmetic number, because the mean of its divisors is an integer number (63272300).

Almost surely, 2^981206856 is an apocalyptic number.

It is an amenable number.

981206856 is an abundant number, since it is smaller than the sum of its proper divisors (2055863544).

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

981206856 is a wasteful number, since it uses less digits than its factorization.

981206856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946858 (or 1946851 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 981206856 is about 31324.2215545734. The cubic root of 981206856 is about 993.6959612718.

It can be divided in two parts, 98120 and 6856, that added together give a 4-th power (104976 = 18⁴).

The spelling of 981206856 in words is "nine hundred eighty-one million, two hundred six thousand, eight hundred fifty-six".