646626113 has 8 divisors (see below), whose sum is σ = 739451328. Its totient is φ = 553913424.

The previous prime is 646626103. The next prime is 646626121. The reversal of 646626113 is 311626646.

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

It is a cyclic number.

It is not a de Polignac number, because 646626113 - 2⁶ = 646626049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (646626103) 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, 15431 + ... + 39132.

It is an arithmetic number, because the mean of its divisors is an integer number (92431416).

Almost surely, 2^646626113 is an apocalyptic number.

It is an amenable number.

646626113 is a deficient number, since it is larger than the sum of its proper divisors (92825215).

646626113 is a wasteful number, since it uses less digits than its factorization.

646626113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56263.

The product of its digits is 31104, while the sum is 35.

The square root of 646626113 is about 25428.8441145090. The cubic root of 646626113 is about 864.7377391079.

The spelling of 646626113 in words is "six hundred forty-six million, six hundred twenty-six thousand, one hundred thirteen".