84685651 has 4 divisors (see below), whose sum is σ = 84704400. Its totient is φ = 84666904.

The previous prime is 84685633. The next prime is 84685663. The reversal of 84685651 is 15658648.

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

It is a cyclic number.

It is not a de Polignac number, because 84685651 - 2¹¹ = 84683603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84685598 and 84685607.

It is not an unprimeable number, because it can be changed into a prime (84685631) 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, 2010 + ... + 13168.

It is an arithmetic number, because the mean of its divisors is an integer number (21176100).

Almost surely, 2^84685651 is an apocalyptic number.

84685651 is a deficient number, since it is larger than the sum of its proper divisors (18749).

84685651 is a wasteful number, since it uses less digits than its factorization.

84685651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18748.

The product of its digits is 230400, while the sum is 43.

The square root of 84685651 is about 9202.4806981596. The cubic root of 84685651 is about 439.1402823768.

The spelling of 84685651 in words is "eighty-four million, six hundred eighty-five thousand, six hundred fifty-one".