86248663621 has 4 divisors (see below), whose sum is σ = 89222755500. Its totient is φ = 83274571744.

The previous prime is 86248663619. The next prime is 86248663661. The reversal of 86248663621 is 12636684268.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57700844100 + 28547819521 = 240210^2 + 168961^2 .

It is a cyclic number.

It is not a de Polignac number, because 86248663621 - 2¹ = 86248663619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86248663601) 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, 1487045896 + ... + 1487045953.

It is an arithmetic number, because the mean of its divisors is an integer number (22305688875).

Almost surely, 2^86248663621 is an apocalyptic number.

It is an amenable number.

86248663621 is a deficient number, since it is larger than the sum of its proper divisors (2974091879).

86248663621 is a wasteful number, since it uses less digits than its factorization.

86248663621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2974091878.

The product of its digits is 3981312, while the sum is 52.

The spelling of 86248663621 in words is "eighty-six billion, two hundred forty-eight million, six hundred sixty-three thousand, six hundred twenty-one".