623274569 has 2 divisors, whose sum is σ = 623274570. Its totient is φ = 623274568.

The previous prime is 623274523. The next prime is 623274593. The reversal of 623274569 is 965472326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 451350025 + 171924544 = 21245^2 + 13112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623274569 is a prime.

It is a super-2 number, since 2×623274569² = 776942376724271522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (623274269) 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, 311637284 + 311637285.

It is an arithmetic number, because the mean of its divisors is an integer number (311637285).

Almost surely, 2^623274569 is an apocalyptic number.

It is an amenable number.

623274569 is a deficient number, since it is larger than the sum of its proper divisors (1).

623274569 is an equidigital number, since it uses as much as digits as its factorization.

623274569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 623274569 is about 24965.4675301705. The cubic root of 623274569 is about 854.2004627337.

The spelling of 623274569 in words is "six hundred twenty-three million, two hundred seventy-four thousand, five hundred sixty-nine".