83621373 has 16 divisors (see below), whose sum is σ = 121832256. Its totient is φ = 50595840.

The previous prime is 83621371. The next prime is 83621383. The reversal of 83621373 is 37312638.

It is not a de Polignac number, because 83621373 - 2¹ = 83621371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83621371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22461 + ... + 25917.

It is an arithmetic number, because the mean of its divisors is an integer number (7614516).

Almost surely, 2^83621373 is an apocalyptic number.

It is an amenable number.

83621373 is a deficient number, since it is larger than the sum of its proper divisors (38210883).

83621373 is a wasteful number, since it uses less digits than its factorization.

83621373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204.

The product of its digits is 18144, while the sum is 33.

The square root of 83621373 is about 9144.4722647072. The cubic root of 83621373 is about 437.2929053050.

The spelling of 83621373 in words is "eighty-three million, six hundred twenty-one thousand, three hundred seventy-three".