84323691 has 12 divisors (see below), whose sum is σ = 128211720. Its totient is φ = 53256960.

The previous prime is 84323671. The next prime is 84323693. The reversal of 84323691 is 19632348.

It is not a de Polignac number, because 84323691 - 2¹⁵ = 84290923 is a prime.

It is a super-2 number, since 2×84323691² = 14220969727726962, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84323693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246390 + ... + 246731.

It is an arithmetic number, because the mean of its divisors is an integer number (10684310).

Almost surely, 2^84323691 is an apocalyptic number.

84323691 is a deficient number, since it is larger than the sum of its proper divisors (43888029).

84323691 is a wasteful number, since it uses less digits than its factorization.

84323691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493146 (or 493143 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 84323691 is about 9182.7932025065. The cubic root of 84323691 is about 438.5137369704.

The spelling of 84323691 in words is "eighty-four million, three hundred twenty-three thousand, six hundred ninety-one".