87898004 has 6 divisors (see below), whose sum is σ = 153821514. Its totient is φ = 43949000.

The previous prime is 87898003. The next prime is 87898021. The reversal of 87898004 is 40089878.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 68095504 + 19802500 = 8252^2 + 4450^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87898003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10987247 + ... + 10987254.

It is an arithmetic number, because the mean of its divisors is an integer number (25636919).

Almost surely, 2^87898004 is an apocalyptic number.

It is an amenable number.

87898004 is a deficient number, since it is larger than the sum of its proper divisors (65923510).

87898004 is a wasteful number, since it uses less digits than its factorization.

87898004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21974505 (or 21974503 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 87898004 is about 9375.3935384068. The cubic root of 87898004 is about 444.6241054109.

The spelling of 87898004 in words is "eighty-seven million, eight hundred ninety-eight thousand, four".