86513998 has 4 divisors (see below), whose sum is σ = 129771000. Its totient is φ = 43256998.

The previous prime is 86513983. The next prime is 86514053. The reversal of 86513998 is 89931568.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21628498 + ... + 21628501.

It is an arithmetic number, because the mean of its divisors is an integer number (32442750).

Almost surely, 2^86513998 is an apocalyptic number.

86513998 is a deficient number, since it is larger than the sum of its proper divisors (43257002).

86513998 is a wasteful number, since it uses less digits than its factorization.

86513998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43257001.

The product of its digits is 466560, while the sum is 49.

The square root of 86513998 is about 9301.2901255686. The cubic root of 86513998 is about 442.2781259717.

The spelling of 86513998 in words is "eighty-six million, five hundred thirteen thousand, nine hundred ninety-eight".