247374687 has 32 divisors (see below), whose sum is σ = 386380800. Its totient is φ = 140720160.

The previous prime is 247374679. The next prime is 247374707. The reversal of 247374687 is 786473742.

It is not a de Polignac number, because 247374687 - 2³ = 247374679 is a prime.

It is a super-2 number, since 2×247374687² = 122388471536695938, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247374287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 319633 + ... + 320405.

It is an arithmetic number, because the mean of its divisors is an integer number (12074400).

Almost surely, 2^247374687 is an apocalyptic number.

247374687 is a deficient number, since it is larger than the sum of its proper divisors (139006113).

247374687 is an equidigital number, since it uses as much as digits as its factorization.

247374687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1094 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 48.

The square root of 247374687 is about 15728.1495097166. The cubic root of 247374687 is about 627.7476360000.

The spelling of 247374687 in words is "two hundred forty-seven million, three hundred seventy-four thousand, six hundred eighty-seven".