647854263 has 12 divisors (see below), whose sum is σ = 1069473808. Its totient is φ = 370202400.

The previous prime is 647854261. The next prime is 647854301. The reversal of 647854263 is 362458746.

647854263 is a `hidden beast` number, since 6 + 47 + 8 + 542 + 63 = 666.

It is not a de Polignac number, because 647854263 - 2¹ = 647854261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647854261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5141638 + ... + 5141763.

Almost surely, 2^647854263 is an apocalyptic number.

647854263 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

647854263 is a deficient number, since it is larger than the sum of its proper divisors (421619545).

647854263 is a wasteful number, since it uses less digits than its factorization.

647854263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10283414 (or 10283411 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 647854263 is about 25452.9814167221. The cubic root of 647854263 is about 865.2848641335.

The spelling of 647854263 in words is "six hundred forty-seven million, eight hundred fifty-four thousand, two hundred sixty-three".