87798654 has 20 divisors (see below), whose sum is σ = 196734384. Its totient is φ = 29266164.

The previous prime is 87798649. The next prime is 87798661. The reversal of 87798654 is 45689778.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 87798654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 270822 + ... + 271145.

Almost surely, 2^87798654 is an apocalyptic number.

87798654 is an abundant number, since it is smaller than the sum of its proper divisors (108935730).

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

87798654 is a wasteful number, since it uses less digits than its factorization.

87798654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541981 (or 541972 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 87798654 is about 9370.0935961174. The cubic root of 87798654 is about 444.4565245930.

The spelling of 87798654 in words is "eighty-seven million, seven hundred ninety-eight thousand, six hundred fifty-four".