646713403 has 16 divisors (see below), whose sum is σ = 748843200. Its totient is φ = 547056000.

The previous prime is 646713359. The next prime is 646713443. The reversal of 646713403 is 304317646.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646713403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646713443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245433 + ... + 248053.

It is an arithmetic number, because the mean of its divisors is an integer number (46802700).

Almost surely, 2^646713403 is an apocalyptic number.

646713403 is a deficient number, since it is larger than the sum of its proper divisors (102129797).

646713403 is a wasteful number, since it uses less digits than its factorization.

646713403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078.

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

The square root of 646713403 is about 25430.5604145878. The cubic root of 646713403 is about 864.7766485381.

The spelling of 646713403 in words is "six hundred forty-six million, seven hundred thirteen thousand, four hundred three".