87997012 has 12 divisors (see below), whose sum is σ = 154462336. Its totient is φ = 43864920.

The previous prime is 87997009. The next prime is 87997027. The reversal of 87997012 is 21079978.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 87997012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31908 + ... + 34555.

Almost surely, 2^87997012 is an apocalyptic number.

It is an amenable number.

87997012 is a deficient number, since it is larger than the sum of its proper divisors (66465324).

87997012 is a wasteful number, since it uses less digits than its factorization.

87997012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66798 (or 66796 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 87997012 is about 9380.6722573598. The cubic root of 87997012 is about 444.7909837747.

The spelling of 87997012 in words is "eighty-seven million, nine hundred ninety-seven thousand, twelve".