87638435 has 16 divisors (see below), whose sum is σ = 109196640. Its totient is φ = 67441920.

The previous prime is 87638399. The next prime is 87638449. The reversal of 87638435 is 53483678.

It is not a de Polignac number, because 87638435 - 2⁶ = 87638371 is a prime.

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, 44420 + ... + 46350.

It is an arithmetic number, because the mean of its divisors is an integer number (6824790).

Almost surely, 2^87638435 is an apocalyptic number.

87638435 is a deficient number, since it is larger than the sum of its proper divisors (21558205).

87638435 is a wasteful number, since it uses less digits than its factorization.

87638435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278.

The product of its digits is 483840, while the sum is 44.

The square root of 87638435 is about 9361.5402044749. The cubic root of 87638435 is about 444.1860051084.

The spelling of 87638435 in words is "eighty-seven million, six hundred thirty-eight thousand, four hundred thirty-five".