647068023 has 24 divisors (see below), whose sum is σ = 1069266848. Its totient is φ = 369375552.

The previous prime is 647068021. The next prime is 647068031. The reversal of 647068023 is 320860746.

647068023 is a `hidden beast` number, since 647 + 0 + 6 + 8 + 0 + 2 + 3 = 666.

It is not a de Polignac number, because 647068023 - 2¹ = 647068021 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 (647068021) 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 23 ways as a sum of consecutive naturals, for example, 64161 + ... + 73557.

Almost surely, 2^647068023 is an apocalyptic number.

647068023 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

647068023 is a deficient number, since it is larger than the sum of its proper divisors (422198825).

647068023 is a wasteful number, since it uses less digits than its factorization.

647068023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10503 (or 10500 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 647068023 is about 25437.5317788499. The cubic root of 647068023 is about 864.9346840543.

The spelling of 647068023 in words is "six hundred forty-seven million, sixty-eight thousand, twenty-three".