646410441 has 8 divisors (see below), whose sum is σ = 865457824. Its totient is φ = 429151680.

The previous prime is 646410409. The next prime is 646410449. The reversal of 646410441 is 144014646.

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

It is not a de Polignac number, because 646410441 - 2⁵ = 646410409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 646410399 and 646410408.

It is not an unprimeable number, because it can be changed into a prime (646410449) 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, 446311 + ... + 447756.

It is an arithmetic number, because the mean of its divisors is an integer number (108182228).

Almost surely, 2^646410441 is an apocalyptic number.

It is an amenable number.

646410441 is a deficient number, since it is larger than the sum of its proper divisors (219047383).

646410441 is a wasteful number, since it uses less digits than its factorization.

646410441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894311.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 646410441 is about 25424.6030647481. The cubic root of 646410441 is about 864.6415885130.

The spelling of 646410441 in words is "six hundred forty-six million, four hundred ten thousand, four hundred forty-one".