646831034 has 16 divisors (see below), whose sum is σ = 976060800. Its totient is φ = 321482784.

The previous prime is 646831033. The next prime is 646831057. The reversal of 646831034 is 430138646.

It is a junction number, because it is equal to n+sod(n) for n = 646830985 and 646831003.

It is not an unprimeable number, because it can be changed into a prime (646831033) 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, 408857 + ... + 410435.

It is an arithmetic number, because the mean of its divisors is an integer number (61003800).

Almost surely, 2^646831034 is an apocalyptic number.

646831034 is a deficient number, since it is larger than the sum of its proper divisors (329229766).

646831034 is a wasteful number, since it uses less digits than its factorization.

646831034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 646831034 is about 25432.8730976270. The cubic root of 646831034 is about 864.8290769010.

The spelling of 646831034 in words is "six hundred forty-six million, eight hundred thirty-one thousand, thirty-four".