87877898 has 4 divisors (see below), whose sum is σ = 131816850. Its totient is φ = 43938948.

The previous prime is 87877897. The next prime is 87877903. The reversal of 87877898 is 89877878.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54272689 + 33605209 = 7367^2 + 5797^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87877898.

It is not an unprimeable number, because it can be changed into a prime (87877897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21969473 + ... + 21969476.

Almost surely, 2^87877898 is an apocalyptic number.

87877898 is a deficient number, since it is larger than the sum of its proper divisors (43938952).

87877898 is a wasteful number, since it uses less digits than its factorization.

87877898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43938951.

The product of its digits is 12644352, while the sum is 62.

The square root of 87877898 is about 9374.3212020924. The cubic root of 87877898 is about 444.5902013646.

The spelling of 87877898 in words is "eighty-seven million, eight hundred seventy-seven thousand, eight hundred ninety-eight".