646606046 has 8 divisors (see below), whose sum is σ = 972705240. Its totient is φ = 322370968.

The previous prime is 646606031. The next prime is 646606111. The reversal of 646606046 is 640606646.

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

It is a congruent number.

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, 465161 + ... + 466548.

It is an arithmetic number, because the mean of its divisors is an integer number (121588155).

Almost surely, 2^646606046 is an apocalyptic number.

646606046 is a deficient number, since it is larger than the sum of its proper divisors (326099194).

646606046 is a wasteful number, since it uses less digits than its factorization.

646606046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932058.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 646606046 is about 25428.4495398363. The cubic root of 646606046 is about 864.7287937676.

The spelling of 646606046 in words is "six hundred forty-six million, six hundred six thousand, forty-six".