83813655 has 32 divisors (see below), whose sum is σ = 149472000. Its totient is φ = 39854592.

The previous prime is 83813623. The next prime is 83813699. The reversal of 83813655 is 55631838.

It is not a de Polignac number, because 83813655 - 2⁵ = 83813623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3805 + ... + 13494.

It is an arithmetic number, because the mean of its divisors is an integer number (4671000).

Almost surely, 2^83813655 is an apocalyptic number.

83813655 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

83813655 is a deficient number, since it is larger than the sum of its proper divisors (65658345).

83813655 is a wasteful number, since it uses less digits than its factorization.

83813655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17343.

The product of its digits is 86400, while the sum is 39.

The square root of 83813655 is about 9154.9797924408. The cubic root of 83813655 is about 437.6278244186.

The spelling of 83813655 in words is "eighty-three million, eight hundred thirteen thousand, six hundred fifty-five".