87652215 has 24 divisors (see below), whose sum is σ = 173635488. Its totient is φ = 40069440.

The previous prime is 87652211. The next prime is 87652217. The reversal of 87652215 is 51225678.

It is a happy number.

It is not a de Polignac number, because 87652215 - 2² = 87652211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87652215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87652211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138816 + ... + 139445.

It is an arithmetic number, because the mean of its divisors is an integer number (7234812).

Almost surely, 2^87652215 is an apocalyptic number.

87652215 is a deficient number, since it is larger than the sum of its proper divisors (85983273).

87652215 is a wasteful number, since it uses less digits than its factorization.

87652215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278279 (or 278276 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 87652215 is about 9362.2761655486. The cubic root of 87652215 is about 444.2092847055.

The spelling of 87652215 in words is "eighty-seven million, six hundred fifty-two thousand, two hundred fifteen".