87178497 has 12 divisors (see below), whose sum is σ = 135215856. Its totient is φ = 49816200.

The previous prime is 87178493. The next prime is 87178519. The reversal of 87178497 is 79487178.

It is not a de Polignac number, because 87178497 - 2² = 87178493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87178493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296379 + ... + 296672.

It is an arithmetic number, because the mean of its divisors is an integer number (11267988).

Almost surely, 2^87178497 is an apocalyptic number.

It is an amenable number.

87178497 is a deficient number, since it is larger than the sum of its proper divisors (48037359).

87178497 is a wasteful number, since it uses less digits than its factorization.

87178497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593068 (or 593061 counting only the distinct ones).

The product of its digits is 790272, while the sum is 51.

The square root of 87178497 is about 9336.9425938045. The cubic root of 87178497 is about 443.4075929776.

The spelling of 87178497 in words is "eighty-seven million, one hundred seventy-eight thousand, four hundred ninety-seven".