247008634 has 4 divisors (see below), whose sum is σ = 370512954. Its totient is φ = 123504316.

The previous prime is 247008617. The next prime is 247008677. The reversal of 247008634 is 436800742.

247008634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 235469025 + 11539609 = 15345^2 + 3397^2 .

It is a super-2 number, since 2×247008634² = 122026530541091912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247008634.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61752157 + ... + 61752160.

Almost surely, 2^247008634 is an apocalyptic number.

247008634 is a deficient number, since it is larger than the sum of its proper divisors (123504320).

247008634 is a wasteful number, since it uses less digits than its factorization.

247008634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123504319.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 247008634 is about 15716.5083272335. The cubic root of 247008634 is about 627.4378463648.

The spelling of 247008634 in words is "two hundred forty-seven million, eight thousand, six hundred thirty-four".