83765144 has 16 divisors (see below), whose sum is σ = 157172400. Its totient is φ = 41852512.

The previous prime is 83765141. The next prime is 83765147. The reversal of 83765144 is 44156738.

It is an interprime number because it is at equal distance from previous prime (83765141) and next prime (83765147).

It is a junction number, because it is equal to n+sod(n) for n = 83765098 and 83765107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83765141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11942 + ... + 17610.

It is an arithmetic number, because the mean of its divisors is an integer number (9823275).

Almost surely, 2^83765144 is an apocalyptic number.

It is an amenable number.

83765144 is a deficient number, since it is larger than the sum of its proper divisors (73407256).

83765144 is a wasteful number, since it uses less digits than its factorization.

83765144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7522 (or 7518 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 83765144 is about 9152.3299765688. The cubic root of 83765144 is about 437.5433757266.

The spelling of 83765144 in words is "eighty-three million, seven hundred sixty-five thousand, one hundred forty-four".