247329663 has 16 divisors (see below), whose sum is σ = 377364480. Its totient is φ = 141150816.

The previous prime is 247329659. The next prime is 247329713. The reversal of 247329663 is 366923742.

It is not a de Polignac number, because 247329663 - 2² = 247329659 is a prime.

It is a super-2 number, since 2×247329663² = 122343924399387138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247329613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10306 + ... + 24512.

It is an arithmetic number, because the mean of its divisors is an integer number (23585280).

Almost surely, 2^247329663 is an apocalyptic number.

247329663 is a deficient number, since it is larger than the sum of its proper divisors (130034817).

247329663 is a wasteful number, since it uses less digits than its factorization.

247329663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15046.

The product of its digits is 326592, while the sum is 42.

The square root of 247329663 is about 15726.7181255340. The cubic root of 247329663 is about 627.7095488041.

The spelling of 247329663 in words is "two hundred forty-seven million, three hundred twenty-nine thousand, six hundred sixty-three".