87121364 has 12 divisors (see below), whose sum is σ = 166322688. Its totient is φ = 39600600.

The previous prime is 87121357. The next prime is 87121367. The reversal of 87121364 is 46312178.

It is a self number, because there is not a number n which added to its sum of digits gives 87121364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87121367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989972 + ... + 990059.

It is an arithmetic number, because the mean of its divisors is an integer number (13860224).

Almost surely, 2^87121364 is an apocalyptic number.

It is an amenable number.

87121364 is a deficient number, since it is larger than the sum of its proper divisors (79201324).

87121364 is a wasteful number, since it uses less digits than its factorization.

87121364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980046 (or 1980044 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 87121364 is about 9333.8825790772. The cubic root of 87121364 is about 443.3107084515.

The spelling of 87121364 in words is "eighty-seven million, one hundred twenty-one thousand, three hundred sixty-four".