83621065 has 32 divisors (see below), whose sum is σ = 114566400. Its totient is φ = 58033920.

The previous prime is 83621053. The next prime is 83621093. The reversal of 83621065 is 56012638.

It is not a de Polignac number, because 83621065 - 2¹³ = 83612873 is a prime.

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, 164031 + ... + 164539.

It is an arithmetic number, because the mean of its divisors is an integer number (3580200).

Almost surely, 2^83621065 is an apocalyptic number.

It is an amenable number.

83621065 is a deficient number, since it is larger than the sum of its proper divisors (30945335).

83621065 is a wasteful number, since it uses less digits than its factorization.

83621065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 83621065 is about 9144.4554239167. The cubic root of 83621065 is about 437.2923684152.

The spelling of 83621065 in words is "eighty-three million, six hundred twenty-one thousand, sixty-five".