247233863 has 2 divisors, whose sum is σ = 247233864. Its totient is φ = 247233862.

The previous prime is 247233853. The next prime is 247233893. The reversal of 247233863 is 368332742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 247233863 - 2⁶ = 247233799 is a prime.

It is a super-2 number, since 2×247233863² = 122249166027805538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247233803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123616931 + 123616932.

It is an arithmetic number, because the mean of its divisors is an integer number (123616932).

Almost surely, 2^247233863 is an apocalyptic number.

247233863 is a deficient number, since it is larger than the sum of its proper divisors (1).

247233863 is an equidigital number, since it uses as much as digits as its factorization.

247233863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 38.

The square root of 247233863 is about 15723.6720583965. The cubic root of 247233863 is about 627.6284932339.

The spelling of 247233863 in words is "two hundred forty-seven million, two hundred thirty-three thousand, eight hundred sixty-three".