646304461 has 8 divisors (see below), whose sum is σ = 727803648. Its totient is φ = 568596000.

The previous prime is 646304447. The next prime is 646304471. The reversal of 646304461 is 164403646.

646304461 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 a cyclic number.

It is not a de Polignac number, because 646304461 - 2⁵ = 646304429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646304431) 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, 947320 + ... + 948001.

It is an arithmetic number, because the mean of its divisors is an integer number (90975456).

Almost surely, 2^646304461 is an apocalyptic number.

It is an amenable number.

646304461 is a deficient number, since it is larger than the sum of its proper divisors (81499187).

646304461 is a wasteful number, since it uses less digits than its factorization.

646304461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895363.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 646304461 is about 25422.5187776507. The cubic root of 646304461 is about 864.5943328180.

The spelling of 646304461 in words is "six hundred forty-six million, three hundred four thousand, four hundred sixty-one".