84345807 has 96 divisors (see below), whose sum is σ = 156280320. Its totient is φ = 39916800.

The previous prime is 84345797. The next prime is 84345827. The reversal of 84345807 is 70854348.

It is not a de Polignac number, because 84345807 - 2⁶ = 84345743 is a prime.

It is a super-2 number, since 2×84345807² = 14228430316962498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84345827) 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 95 ways as a sum of consecutive naturals, for example, 835057 + ... + 835157.

It is an arithmetic number, because the mean of its divisors is an integer number (1627920).

Almost surely, 2^84345807 is an apocalyptic number.

84345807 is a deficient number, since it is larger than the sum of its proper divisors (71934513).

84345807 is a wasteful number, since it uses less digits than its factorization.

84345807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 84345807 is about 9183.9973323167. The cubic root of 84345807 is about 438.5520706896.

It can be divided in two parts, 8434 and 5807, that added together give a palindrome (14241).

The spelling of 84345807 in words is "eighty-four million, three hundred forty-five thousand, eight hundred seven".