87612398 has 4 divisors (see below), whose sum is σ = 131418600. Its totient is φ = 43806198.

The previous prime is 87612391. The next prime is 87612431. The reversal of 87612398 is 89321678.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87612391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21903098 + ... + 21903101.

It is an arithmetic number, because the mean of its divisors is an integer number (32854650).

Almost surely, 2^87612398 is an apocalyptic number.

87612398 is a deficient number, since it is larger than the sum of its proper divisors (43806202).

87612398 is a wasteful number, since it uses less digits than its factorization.

87612398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43806201.

The product of its digits is 145152, while the sum is 44.

The square root of 87612398 is about 9360.1494646186. The cubic root of 87612398 is about 444.1420121711.

The spelling of 87612398 in words is "eighty-seven million, six hundred twelve thousand, three hundred ninety-eight".