83664503 has 4 divisors (see below), whose sum is σ = 90100248. Its totient is φ = 77228760.

The previous prime is 83664499. The next prime is 83664533. The reversal of 83664503 is 30546638.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83664503 - 2² = 83664499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83664533) 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, 3217853 + ... + 3217878.

It is an arithmetic number, because the mean of its divisors is an integer number (22525062).

Almost surely, 2^83664503 is an apocalyptic number.

83664503 is a deficient number, since it is larger than the sum of its proper divisors (6435745).

83664503 is a wasteful number, since it uses less digits than its factorization.

83664503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435744.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 83664503 is about 9146.8302159819. The cubic root of 83664503 is about 437.3680742906.

The spelling of 83664503 in words is "eighty-three million, six hundred sixty-four thousand, five hundred three".