87563838 has 32 divisors (see below), whose sum is σ = 187681536. Its totient is φ = 27137408.

The previous prime is 87563797. The next prime is 87563863. The reversal of 87563838 is 83836578.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3295 + ... + 13637.

It is an arithmetic number, because the mean of its divisors is an integer number (5865048).

Almost surely, 2^87563838 is an apocalyptic number.

87563838 is an abundant number, since it is smaller than the sum of its proper divisors (100117698).

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

87563838 is a wasteful number, since it uses less digits than its factorization.

87563838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10448.

The product of its digits is 967680, while the sum is 48.

The square root of 87563838 is about 9357.5551294128. Note that the first 3 decimals coincide. The cubic root of 87563838 is about 444.0599403696.

The spelling of 87563838 in words is "eighty-seven million, five hundred sixty-three thousand, eight hundred thirty-eight".