247674645 has 64 divisors (see below), whose sum is σ = 466905600. Its totient is φ = 124346880.

The previous prime is 247674613. The next prime is 247674667. The reversal of 247674645 is 546476742.

It is not a de Polignac number, because 247674645 - 2⁵ = 247674613 is a prime.

It is a super-2 number, since 2×247674645² = 122685459551752050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 247674645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 159744 + ... + 161286.

It is an arithmetic number, because the mean of its divisors is an integer number (7295400).

Almost surely, 2^247674645 is an apocalyptic number.

It is an amenable number.

247674645 is a deficient number, since it is larger than the sum of its proper divisors (219230955).

247674645 is a wasteful number, since it uses less digits than its factorization.

247674645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627 (or 1621 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 45.

The square root of 247674645 is about 15737.6823261877. The cubic root of 247674645 is about 628.0012618810.

The spelling of 247674645 in words is "two hundred forty-seven million, six hundred seventy-four thousand, six hundred forty-five".