646036413 has 8 divisors (see below), whose sum is σ = 939689376. Its totient is φ = 391537200.

The previous prime is 646036411. The next prime is 646036439. The reversal of 646036413 is 314630646.

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

It is not a de Polignac number, because 646036413 - 2¹ = 646036411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 19576861 = 646036413 / (6 + 4 + 6 + 0 + 3 + 6 + 4 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646036411) 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, 9788398 + ... + 9788463.

It is an arithmetic number, because the mean of its divisors is an integer number (117461172).

Almost surely, 2^646036413 is an apocalyptic number.

It is an amenable number.

646036413 is a deficient number, since it is larger than the sum of its proper divisors (293652963).

646036413 is a wasteful number, since it uses less digits than its factorization.

646036413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19576875.

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 646036413 is about 25417.2463693454. The cubic root of 646036413 is about 864.4747891447.

The spelling of 646036413 in words is "six hundred forty-six million, thirty-six thousand, four hundred thirteen".