815961096 has 24 divisors (see below), whose sum is σ = 2209894830. Its totient is φ = 271987008.

The previous prime is 815961089. The next prime is 815961127. The reversal of 815961096 is 690169518.

It can be written as a sum of positive squares in only one way, i.e., 708092100 + 107868996 = 26610^2 + 10386^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5666325 + ... + 5666468.

Almost surely, 2^815961096 is an apocalyptic number.

It is an amenable number.

815961096 is an abundant number, since it is smaller than the sum of its proper divisors (1393933734).

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

815961096 is a wasteful number, since it uses less digits than its factorization.

815961096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11332805 (or 11332798 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 815961096 is about 28565.0327498499. The cubic root of 815961096 is about 934.4508947588.

The spelling of 815961096 in words is "eight hundred fifteen million, nine hundred sixty-one thousand, ninety-six".