623539298 has 6 divisors (see below), whose sum is σ = 935361921. Its totient is φ = 311751992.

The previous prime is 623539297. The next prime is 623539327. The reversal of 623539298 is 892935326.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 514064929 + 109474369 = 22673^2 + 10463^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=17657.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623539297) 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 in 2 ways as a sum of consecutive naturals, for example, 26486 + ... + 44142.

Almost surely, 2^623539298 is an apocalyptic number.

623539298 is a deficient number, since it is larger than the sum of its proper divisors (311822623).

623539298 is an frugal number, since it uses more digits than its factorization.

623539298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35316 (or 17659 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The square root of 623539298 is about 24970.7688708217. The cubic root of 623539298 is about 854.3213830244.

The spelling of 623539298 in words is "six hundred twenty-three million, five hundred thirty-nine thousand, two hundred ninety-eight".