646472635 has 8 divisors (see below), whose sum is σ = 776090016. Its totient is φ = 516962880.

The previous prime is 646472633. The next prime is 646472647. The reversal of 646472635 is 536274646.

646472635 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 646472635 - 2¹ = 646472633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 646472591 and 646472600.

It is not an unprimeable number, because it can be changed into a prime (646472633) 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, 13039 + ... + 38248.

It is an arithmetic number, because the mean of its divisors is an integer number (97011252).

Almost surely, 2^646472635 is an apocalyptic number.

646472635 is a deficient number, since it is larger than the sum of its proper divisors (129617381).

646472635 is a wasteful number, since it uses less digits than its factorization.

646472635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53813.

The product of its digits is 725760, while the sum is 43.

The square root of 646472635 is about 25425.8261419369. The cubic root of 646472635 is about 864.6693179508.

The spelling of 646472635 in words is "six hundred forty-six million, four hundred seventy-two thousand, six hundred thirty-five".