83772645 has 16 divisors (see below), whose sum is σ = 146221632. Its totient is φ = 40616960.

The previous prime is 83772631. The next prime is 83772673. The reversal of 83772645 is 54627738.

It is not a de Polignac number, because 83772645 - 2⁵ = 83772613 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83772597 and 83772606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253692 + ... + 254021.

It is an arithmetic number, because the mean of its divisors is an integer number (9138852).

Almost surely, 2^83772645 is an apocalyptic number.

It is an amenable number.

83772645 is a deficient number, since it is larger than the sum of its proper divisors (62448987).

83772645 is a wasteful number, since it uses less digits than its factorization.

83772645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507732.

The product of its digits is 282240, while the sum is 42.

The square root of 83772645 is about 9152.7397537568. The cubic root of 83772645 is about 437.5564357129.

The spelling of 83772645 in words is "eighty-three million, seven hundred seventy-two thousand, six hundred forty-five".