646113567 has 32 divisors (see below), whose sum is σ = 956448000. Its totient is φ = 384707840.

The previous prime is 646113553. The next prime is 646113569. The reversal of 646113567 is 765311646.

646113567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 646113567 - 2¹⁶ = 646048031 is a prime.

It is a super-2 number, since 2×646113567² = 834925482922926978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646113569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 525109 + ... + 526337.

It is an arithmetic number, because the mean of its divisors is an integer number (29889000).

Almost surely, 2^646113567 is an apocalyptic number.

646113567 is a deficient number, since it is larger than the sum of its proper divisors (310334433).

646113567 is a wasteful number, since it uses less digits than its factorization.

646113567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511.

The product of its digits is 90720, while the sum is 39.

The square root of 646113567 is about 25418.7640730229. The cubic root of 646113567 is about 864.5092015666.

The spelling of 646113567 in words is "six hundred forty-six million, one hundred thirteen thousand, five hundred sixty-seven".