624642773 has 2 divisors, whose sum is σ = 624642774. Its totient is φ = 624642772.

The previous prime is 624642761. The next prime is 624642791. The reversal of 624642773 is 377246426.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483912004 + 140730769 = 21998^2 + 11863^2 .

It is a cyclic number.

It is not a de Polignac number, because 624642773 - 2²² = 620448469 is a prime.

It is a super-2 number, since 2×624642773² = 780357187722259058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 624642773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624642973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312321386 + 312321387.

It is an arithmetic number, because the mean of its divisors is an integer number (312321387).

Almost surely, 2^624642773 is an apocalyptic number.

It is an amenable number.

624642773 is a deficient number, since it is larger than the sum of its proper divisors (1).

624642773 is an equidigital number, since it uses as much as digits as its factorization.

624642773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 41.

The square root of 624642773 is about 24992.8544388191. The cubic root of 624642773 is about 854.8250490732.

The spelling of 624642773 in words is "six hundred twenty-four million, six hundred forty-two thousand, seven hundred seventy-three".