623620733 has 2 divisors, whose sum is σ = 623620734. Its totient is φ = 623620732.

The previous prime is 623620721. The next prime is 623620747. The reversal of 623620733 is 337026326.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 528402169 + 95218564 = 22987^2 + 9758^2 .

It is a cyclic number.

It is not a de Polignac number, because 623620733 - 2²⁶ = 556511869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 623620733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623620433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311810366 + 311810367.

It is an arithmetic number, because the mean of its divisors is an integer number (311810367).

Almost surely, 2^623620733 is an apocalyptic number.

It is an amenable number.

623620733 is a deficient number, since it is larger than the sum of its proper divisors (1).

623620733 is an equidigital number, since it uses as much as digits as its factorization.

623620733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 32.

The square root of 623620733 is about 24972.3994241643. The cubic root of 623620733 is about 854.3585732135.

The spelling of 623620733 in words is "six hundred twenty-three million, six hundred twenty thousand, seven hundred thirty-three".