84622645 has 4 divisors (see below), whose sum is σ = 101547180. Its totient is φ = 67698112.

The previous prime is 84622631. The next prime is 84622661. The reversal of 84622645 is 54622648.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39652209 + 44970436 = 6297^2 + 6706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84622645 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8462260 + ... + 8462269.

It is an arithmetic number, because the mean of its divisors is an integer number (25386795).

Almost surely, 2^84622645 is an apocalyptic number.

It is an amenable number.

84622645 is a deficient number, since it is larger than the sum of its proper divisors (16924535).

84622645 is a wasteful number, since it uses less digits than its factorization.

84622645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16924534.

The product of its digits is 92160, while the sum is 37.

The square root of 84622645 is about 9199.0567451234. The cubic root of 84622645 is about 439.0313487817.

The spelling of 84622645 in words is "eighty-four million, six hundred twenty-two thousand, six hundred forty-five".