83705765 has 16 divisors (see below), whose sum is σ = 118008576. Its totient is φ = 56193600.

The previous prime is 83705759. The next prime is 83705771. The reversal of 83705765 is 56750738.

It is an interprime number because it is at equal distance from previous prime (83705759) and next prime (83705771).

It is not a de Polignac number, because 83705765 - 2⁶ = 83705701 is a prime.

It is a Duffinian number.

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, 57821 + ... + 59250.

It is an arithmetic number, because the mean of its divisors is an integer number (7375536).

Almost surely, 2^83705765 is an apocalyptic number.

It is an amenable number.

83705765 is a deficient number, since it is larger than the sum of its proper divisors (34302811).

83705765 is a wasteful number, since it uses less digits than its factorization.

83705765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117100.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 83705765 is about 9149.0854734230. The cubic root of 83705765 is about 437.4399634625.

The spelling of 83705765 in words is "eighty-three million, seven hundred five thousand, seven hundred sixty-five".