83664903 has 16 divisors (see below), whose sum is σ = 130092800. Its totient is φ = 47807928.

The previous prime is 83664901. The next prime is 83664907. The reversal of 83664903 is 30946638.

It is not a de Polignac number, because 83664903 - 2¹ = 83664901 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83664901) 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, 39625 + ... + 41682.

It is an arithmetic number, because the mean of its divisors is an integer number (8130800).

Almost surely, 2^83664903 is an apocalyptic number.

83664903 is a deficient number, since it is larger than the sum of its proper divisors (46427897).

83664903 is an equidigital number, since it uses as much as digits as its factorization.

83664903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81331 (or 81317 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 83664903 is about 9146.8520814540. The cubic root of 83664903 is about 437.3687713084.

The spelling of 83664903 in words is "eighty-three million, six hundred sixty-four thousand, nine hundred three".