624799969 has 2 divisors, whose sum is σ = 624799970. Its totient is φ = 624799968.

The previous prime is 624799961. The next prime is 624799979. The reversal of 624799969 is 969997426.

624799969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379470400 + 245329569 = 19480^2 + 15663^2 .

It is a cyclic number.

It is not a de Polignac number, because 624799969 - 2³ = 624799961 is a prime.

It is a super-2 number, since 2×624799969² = 780750002524801922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (624799961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312399984 + 312399985.

It is an arithmetic number, because the mean of its divisors is an integer number (312399985).

Almost surely, 2^624799969 is an apocalyptic number.

It is an amenable number.

624799969 is a deficient number, since it is larger than the sum of its proper divisors (1).

624799969 is an equidigital number, since it uses as much as digits as its factorization.

624799969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13226976, while the sum is 61.

The square root of 624799969 is about 24995.9990598496. Note that the first 3 decimals coincide. The cubic root of 624799969 is about 854.8967507528.

The spelling of 624799969 in words is "six hundred twenty-four million, seven hundred ninety-nine thousand, nine hundred sixty-nine".