623662903 has 4 divisors (see below), whose sum is σ = 623715880. Its totient is φ = 623609928.

The previous prime is 623662891. The next prime is 623662909. The reversal of 623662903 is 309266326.

623662903 is a nontrivial binomial coefficient, being equal to C(35318, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(623662903) divides (623662903-1)³.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623662903 is a prime.

It is a deceptive number, since it divides R_623662902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623662909) 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, 1 + ... + 35317.

It is an arithmetic number, because the mean of its divisors is an integer number (155928970).

Almost surely, 2^623662903 is an apocalyptic number.

623662903 is the 35317-th triangular number and also the 17659-th hexagonal number.

623662903 is the 11773-rd centered nonagonal number.

623662903 is a deficient number, since it is larger than the sum of its proper divisors (52977).

623662903 is a wasteful number, since it uses less digits than its factorization.

623662903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52976.

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 623662903 is about 24973.2437420532. The cubic root of 623662903 is about 854.3778303715.

The spelling of 623662903 in words is "six hundred twenty-three million, six hundred sixty-two thousand, nine hundred three".