84064831 has 4 divisors (see below), whose sum is σ = 84083832. Its totient is φ = 84045832.

The previous prime is 84064819. The next prime is 84064843. The reversal of 84064831 is 13846048.

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

It is an interprime number because it is at equal distance from previous prime (84064819) and next prime (84064843).

It is a cyclic number.

It is not a de Polignac number, because 84064831 - 2⁹ = 84064319 is a prime.

It is a super-2 number, since 2×84064831² = 14133791622117122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84064891) 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, 1020 + ... + 13006.

It is an arithmetic number, because the mean of its divisors is an integer number (21020958).

Almost surely, 2^84064831 is an apocalyptic number.

84064831 is a deficient number, since it is larger than the sum of its proper divisors (19001).

84064831 is a wasteful number, since it uses less digits than its factorization.

84064831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19000.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 84064831 is about 9168.6875287579. The cubic root of 84064831 is about 438.0645550965.

The spelling of 84064831 in words is "eighty-four million, sixty-four thousand, eight hundred thirty-one".