646703341 has 8 divisors (see below), whose sum is σ = 685559160. Its totient is φ = 607938048.

The previous prime is 646703339. The next prime is 646703347. The reversal of 646703341 is 143307646.

It can be written as a sum of positive squares in 4 ways, for example, as 517790025 + 128913316 = 22755^2 + 11354^2 .

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 646703341 - 2¹ = 646703339 is a prime.

It is a super-2 number, since 2×646703341² = 836450422521124562, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 646703297 and 646703306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646703347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7626 + ... + 36763.

It is an arithmetic number, because the mean of its divisors is an integer number (85694895).

Almost surely, 2^646703341 is an apocalyptic number.

It is an amenable number.

646703341 is a deficient number, since it is larger than the sum of its proper divisors (38855819).

646703341 is a wasteful number, since it uses less digits than its factorization.

646703341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45263.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 646703341 is about 25430.3625809779. The cubic root of 646703341 is about 864.7721635902.

The spelling of 646703341 in words is "six hundred forty-six million, seven hundred three thousand, three hundred forty-one".