87651004 has 36 divisors (see below), whose sum is σ = 179096736. Its totient is φ = 37425024.

The previous prime is 87650987. The next prime is 87651017. The reversal of 87651004 is 40015678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65389 + ... + 66715.

Almost surely, 2^87651004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87651004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89548368).

87651004 is an abundant number, since it is smaller than the sum of its proper divisors (91445732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87651004 is a wasteful number, since it uses less digits than its factorization.

87651004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682 (or 1673 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 87651004 is about 9362.2114908818. The cubic root of 87651004 is about 444.2072389693.

The spelling of 87651004 in words is "eighty-seven million, six hundred fifty-one thousand, four".