83621027 has 4 divisors (see below), whose sum is σ = 95566896. Its totient is φ = 71675160.

The previous prime is 83620993. The next prime is 83621029. The reversal of 83621027 is 72012638.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72012638 = 2 ⋅36006319.

It is a cyclic number.

It is not a de Polignac number, because 83621027 - 2²² = 79426723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83621029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5972924 + ... + 5972937.

It is an arithmetic number, because the mean of its divisors is an integer number (23891724).

Almost surely, 2^83621027 is an apocalyptic number.

83621027 is a deficient number, since it is larger than the sum of its proper divisors (11945869).

83621027 is a wasteful number, since it uses less digits than its factorization.

83621027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11945868.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 83621027 is about 9144.4533461547. The cubic root of 83621027 is about 437.2923021755.

The spelling of 83621027 in words is "eighty-three million, six hundred twenty-one thousand, twenty-seven".