247638083 has 8 divisors (see below), whose sum is σ = 308743680. Its totient is φ = 192964680.

The previous prime is 247638071. The next prime is 247638089. The reversal of 247638083 is 380836742.

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

It is a cyclic number.

It is not a de Polignac number, because 247638083 - 2⁴ = 247638067 is a prime.

It is a super-2 number, since 2×247638083² = 122649240303829778, 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 247638083.

It is not an unprimeable number, because it can be changed into a prime (247638089) 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, 1607963 + ... + 1608116.

It is an arithmetic number, because the mean of its divisors is an integer number (38592960).

Almost surely, 2^247638083 is an apocalyptic number.

247638083 is a deficient number, since it is larger than the sum of its proper divisors (61105597).

247638083 is a wasteful number, since it uses less digits than its factorization.

247638083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3216097.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 247638083 is about 15736.5206764392. The cubic root of 247638083 is about 627.9703582842.

The spelling of 247638083 in words is "two hundred forty-seven million, six hundred thirty-eight thousand, eighty-three".