87100507 has 4 divisors (see below), whose sum is σ = 93800560. Its totient is φ = 80400456.

The previous prime is 87100501. The next prime is 87100511. The reversal of 87100507 is 70500178.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87100507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87100501) 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, 3350007 + ... + 3350032.

It is an arithmetic number, because the mean of its divisors is an integer number (23450140).

Almost surely, 2^87100507 is an apocalyptic number.

87100507 is a deficient number, since it is larger than the sum of its proper divisors (6700053).

87100507 is a wasteful number, since it uses less digits than its factorization.

87100507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700052.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 87100507 is about 9332.7652386632. The cubic root of 87100507 is about 443.2753291868.

The spelling of 87100507 in words is "eighty-seven million, one hundred thousand, five hundred seven".