87291696 has 20 divisors (see below), whose sum is σ = 225503672. Its totient is φ = 29097216.

The previous prime is 87291661. The next prime is 87291697. The reversal of 87291696 is 69619278.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1818577 = 87291696 / (8 + 7 + 2 + 9 + 1 + 6 + 9 + 6).

It is not an unprimeable number, because it can be changed into a prime (87291697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909241 + ... + 909336.

Almost surely, 2^87291696 is an apocalyptic number.

It is an amenable number.

87291696 is an abundant number, since it is smaller than the sum of its proper divisors (138211976).

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

87291696 is a wasteful number, since it uses less digits than its factorization.

87291696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818588 (or 1818582 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 87291696 is about 9343.0025152517. The cubic root of 87291696 is about 443.5994276946.

The spelling of 87291696 in words is "eighty-seven million, two hundred ninety-one thousand, six hundred ninety-six".