87861832 has 8 divisors (see below), whose sum is σ = 164740950. Its totient is φ = 43930912.

The previous prime is 87861827. The next prime is 87861841. The reversal of 87861832 is 23816878.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 87721956 + 139876 = 9366^2 + 374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5491357 + ... + 5491372.

Almost surely, 2^87861832 is an apocalyptic number.

It is an amenable number.

87861832 is a deficient number, since it is larger than the sum of its proper divisors (76879118).

87861832 is a wasteful number, since it uses less digits than its factorization.

87861832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10982735 (or 10982731 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 87861832 is about 9373.4642475448. The cubic root of 87861832 is about 444.5631061121.

The spelling of 87861832 in words is "eighty-seven million, eight hundred sixty-one thousand, eight hundred thirty-two".