623576969 has 2 divisors, whose sum is σ = 623576970. Its totient is φ = 623576968.

The previous prime is 623576939. The next prime is 623576977. The reversal of 623576969 is 969675326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498405625 + 125171344 = 22325^2 + 11188^2 .

It is a cyclic number.

It is not a de Polignac number, because 623576969 - 2¹⁶ = 623511433 is a prime.

It is a super-2 number, since 2×623576969² = 777696472534453922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 623576969.

It is not a weakly prime, because it can be changed into another prime (623576939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311788484 + 311788485.

It is an arithmetic number, because the mean of its divisors is an integer number (311788485).

Almost surely, 2^623576969 is an apocalyptic number.

It is an amenable number.

623576969 is a deficient number, since it is larger than the sum of its proper divisors (1).

623576969 is an equidigital number, since it uses as much as digits as its factorization.

623576969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 53.

The square root of 623576969 is about 24971.5231613933. The cubic root of 623576969 is about 854.3385872288.

The spelling of 623576969 in words is "six hundred twenty-three million, five hundred seventy-six thousand, nine hundred sixty-nine".