915981696 has 288 divisors, whose sum is σ = 3185025480. Its totient is φ = 261273600.

The previous prime is 915981653. The next prime is 915981701. The reversal of 915981696 is 696189519.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1523796 + ... + 1524396.

Almost surely, 2^915981696 is an apocalyptic number.

915981696 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 915981696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592512740).

915981696 is an abundant number, since it is smaller than the sum of its proper divisors (2269043784).

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

915981696 is an equidigital number, since it uses as much as digits as its factorization.

915981696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 613 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 915981696 is about 30265.1895087409. The cubic root of 915981696 is about 971.1707605186.

The spelling of 915981696 in words is "nine hundred fifteen million, nine hundred eighty-one thousand, six hundred ninety-six".