247001663 has 8 divisors (see below), whose sum is σ = 248978928. Its totient is φ = 245029824.

The previous prime is 247001639. The next prime is 247001681. The reversal of 247001663 is 366100742.

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 247001663 - 2¹⁶ = 246936127 is a prime.

It is a super-2 number, since 2×247001663² = 122019643049531138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247001683) 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, 161420 + ... + 162942.

It is an arithmetic number, because the mean of its divisors is an integer number (31122366).

Almost surely, 2^247001663 is an apocalyptic number.

247001663 is a deficient number, since it is larger than the sum of its proper divisors (1977265).

247001663 is a wasteful number, since it uses less digits than its factorization.

247001663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 247001663 is about 15716.2865524907. The cubic root of 247001663 is about 627.4319438580.

The spelling of 247001663 in words is "two hundred forty-seven million, one thousand, six hundred sixty-three".