646417602601 has 8 divisors (see below), whose sum is σ = 648113511240. Its totient is φ = 644721869952.

The previous prime is 646417602581. The next prime is 646417602613. The reversal of 646417602601 is 106206714646.

It can be written as a sum of positive squares in 4 ways, for example, as 206515713600 + 439901889001 = 454440^2 + 663251^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646417602601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646417608601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10773781 + ... + 10833613.

It is an arithmetic number, because the mean of its divisors is an integer number (81014188905).

Almost surely, 2^646417602601 is an apocalyptic number.

It is an amenable number.

646417602601 is a deficient number, since it is larger than the sum of its proper divisors (1695908639).

646417602601 is a wasteful number, since it uses less digits than its factorization.

646417602601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87995.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 646417602601 in words is "six hundred forty-six billion, four hundred seventeen million, six hundred two thousand, six hundred one".