646035473 has 16 divisors (see below), whose sum is σ = 691574400. Its totient is φ = 601706880.

The previous prime is 646035463. The next prime is 646035487. The reversal of 646035473 is 374530646.

It is not a de Polignac number, because 646035473 - 2⁸ = 646035217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646035413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608363 + ... + 609423.

It is an arithmetic number, because the mean of its divisors is an integer number (43223400).

Almost surely, 2^646035473 is an apocalyptic number.

It is an amenable number.

646035473 is a deficient number, since it is larger than the sum of its proper divisors (45538927).

646035473 is a wasteful number, since it uses less digits than its factorization.

646035473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592.

The product of its (nonzero) digits is 181440, while the sum is 38.

The square root of 646035473 is about 25417.2278779571. The cubic root of 646035473 is about 864.4743698666.

The spelling of 646035473 in words is "six hundred forty-six million, thirty-five thousand, four hundred seventy-three".