84699621 has 16 divisors (see below), whose sum is σ = 125809920. Its totient is φ = 56318400.

The previous prime is 84699619. The next prime is 84699631. The reversal of 84699621 is 12699648.

It is a happy number.

It is not a de Polignac number, because 84699621 - 2¹ = 84699619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84699611) 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 in 15 ways as a sum of consecutive naturals, for example, 6916 + ... + 14738.

It is an arithmetic number, because the mean of its divisors is an integer number (7863120).

Almost surely, 2^84699621 is an apocalyptic number.

It is an amenable number.

84699621 is a deficient number, since it is larger than the sum of its proper divisors (41110299).

84699621 is a wasteful number, since it uses less digits than its factorization.

84699621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8233 (or 8227 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 84699621 is about 9203.2397013226. The cubic root of 84699621 is about 439.1644283502.

The spelling of 84699621 in words is "eighty-four million, six hundred ninety-nine thousand, six hundred twenty-one".