646693834 has 8 divisors (see below), whose sum is σ = 971514720. Its totient is φ = 322855596.

The previous prime is 646693811. The next prime is 646693871. The reversal of 646693834 is 438396646.

646693834 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244014 + ... + 246649.

It is an arithmetic number, because the mean of its divisors is an integer number (121439340).

Almost surely, 2^646693834 is an apocalyptic number.

646693834 is a deficient number, since it is larger than the sum of its proper divisors (324820886).

646693834 is a wasteful number, since it uses less digits than its factorization.

646693834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491324.

The product of its digits is 2239488, while the sum is 49.

The square root of 646693834 is about 25430.1756580642. The cubic root of 646693834 is about 864.7679259804.

The spelling of 646693834 in words is "six hundred forty-six million, six hundred ninety-three thousand, eight hundred thirty-four".