83623685 has 4 divisors (see below), whose sum is σ = 100348428. Its totient is φ = 66898944.

The previous prime is 83623681. The next prime is 83623703. The reversal of 83623685 is 58632638.

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 51008164 + 32615521 = 7142^2 + 5711^2 .

It is a cyclic number.

It is not a de Polignac number, because 83623685 - 2² = 83623681 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83623681) 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, 8362364 + ... + 8362373.

It is an arithmetic number, because the mean of its divisors is an integer number (25087107).

Almost surely, 2^83623685 is an apocalyptic number.

It is an amenable number.

83623685 is a deficient number, since it is larger than the sum of its proper divisors (16724743).

83623685 is a wasteful number, since it uses less digits than its factorization.

83623685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16724742.

The product of its digits is 207360, while the sum is 41.

The square root of 83623685 is about 9144.5986790017. The cubic root of 83623685 is about 437.2969354225.

The spelling of 83623685 in words is "eighty-three million, six hundred twenty-three thousand, six hundred eighty-five".