463640247 has 32 divisors (see below), whose sum is σ = 810332160. Its totient is φ = 256387680.

The previous prime is 463640239. The next prime is 463640257. The reversal of 463640247 is 742046364.

463640247 is a `hidden beast` number, since 4 + 6 + 3 + 640 + 2 + 4 + 7 = 666.

It is not a de Polignac number, because 463640247 - 2³ = 463640239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (463640227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33708 + ... + 45425.

It is an arithmetic number, because the mean of its divisors is an integer number (25322880).

Almost surely, 2^463640247 is an apocalyptic number.

463640247 is a deficient number, since it is larger than the sum of its proper divisors (346691913).

463640247 is a wasteful number, since it uses less digits than its factorization.

463640247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79180 (or 79174 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The square root of 463640247 is about 21532.3070524271. The cubic root of 463640247 is about 773.9751960082.

The spelling of 463640247 in words is "four hundred sixty-three million, six hundred forty thousand, two hundred forty-seven".