83865963 has 16 divisors (see below), whose sum is σ = 114336000. Its totient is φ = 54663840.

The previous prime is 83865937. The next prime is 83865967. The reversal of 83865963 is 36956838.

It is not a de Polignac number, because 83865963 - 2⁵ = 83865931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83865967) 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, 34033 + ... + 36413.

It is an arithmetic number, because the mean of its divisors is an integer number (7146000).

Almost surely, 2^83865963 is an apocalyptic number.

83865963 is a deficient number, since it is larger than the sum of its proper divisors (30470037).

83865963 is a wasteful number, since it uses less digits than its factorization.

83865963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642.

The product of its digits is 933120, while the sum is 48.

The square root of 83865963 is about 9157.8361527164. The cubic root of 83865963 is about 437.7188464830.

The spelling of 83865963 in words is "eighty-three million, eight hundred sixty-five thousand, nine hundred sixty-three".