83863505 has 16 divisors (see below), whose sum is σ = 113572800. Its totient is φ = 58887360.

The previous prime is 83863501. The next prime is 83863513. The reversal of 83863505 is 50536838.

It is not a de Polignac number, because 83863505 - 2² = 83863501 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83863501) 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, 24695 + ... + 27884.

It is an arithmetic number, because the mean of its divisors is an integer number (7098300).

Almost surely, 2^83863505 is an apocalyptic number.

It is an amenable number.

83863505 is a deficient number, since it is larger than the sum of its proper divisors (29709295).

83863505 is a wasteful number, since it uses less digits than its factorization.

83863505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52624.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 83863505 is about 9157.7019497252. The cubic root of 83863505 is about 437.7145701219.

The spelling of 83863505 in words is "eighty-three million, eight hundred sixty-three thousand, five hundred five".