247475676 has 144 divisors (see below), whose sum is σ = 726243840. Its totient is φ = 65197440.

The previous prime is 247475659. The next prime is 247475687. The reversal of 247475676 is 676574742.

It is a happy number.

247475676 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247475676² = 122488420423313952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 391881 + ... + 392511.

It is an arithmetic number, because the mean of its divisors is an integer number (5043360).

Almost surely, 2^247475676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247475676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363121920).

247475676 is an abundant number, since it is smaller than the sum of its proper divisors (478768164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247475676 is a wasteful number, since it uses less digits than its factorization.

247475676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 695 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 48.

The square root of 247475676 is about 15731.3596360899. The cubic root of 247475676 is about 627.8330489173.

Subtracting from 247475676 its sum of digits (48), we obtain a triangular number (247475628 = T₂₂₂₄₇).

The spelling of 247475676 in words is "two hundred forty-seven million, four hundred seventy-five thousand, six hundred seventy-six".