247478707 has 8 divisors (see below), whose sum is σ = 299470176. Its totient is φ = 199646592.

The previous prime is 247478659. The next prime is 247478713. The reversal of 247478707 is 707874742.

247478707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247478707 is a prime.

It is a super-2 number, since 2×247478707² = 122491420836783698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247478107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039708 + ... + 1039945.

It is an arithmetic number, because the mean of its divisors is an integer number (37433772).

Almost surely, 2^247478707 is an apocalyptic number.

247478707 is a deficient number, since it is larger than the sum of its proper divisors (51991469).

247478707 is a wasteful number, since it uses less digits than its factorization.

247478707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079677.

The product of its (nonzero) digits is 614656, while the sum is 46.

The square root of 247478707 is about 15731.4559720326. The cubic root of 247478707 is about 627.8356120704.

The spelling of 247478707 in words is "two hundred forty-seven million, four hundred seventy-eight thousand, seven hundred seven".