87247975 has 6 divisors (see below), whose sum is σ = 108187520. Its totient is φ = 69798360.

The previous prime is 87247969. The next prime is 87247987. The reversal of 87247975 is 57974278.

It is not a de Polignac number, because 87247975 - 2³ = 87247967 is a prime.

It is a super-2 number, since 2×87247975² = 15224418283201250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1744935 + ... + 1744984.

Almost surely, 2^87247975 is an apocalyptic number.

87247975 is a deficient number, since it is larger than the sum of its proper divisors (20939545).

87247975 is a wasteful number, since it uses less digits than its factorization.

87247975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489929 (or 3489924 counting only the distinct ones).

The product of its digits is 987840, while the sum is 49.

The square root of 87247975 is about 9340.6624497409. The cubic root of 87247975 is about 443.5253547859.

The spelling of 87247975 in words is "eighty-seven million, two hundred forty-seven thousand, nine hundred seventy-five".