646708130 has 32 divisors (see below), whose sum is σ = 1235036160. Its totient is φ = 243129600.

The previous prime is 646708103. The next prime is 646708133. The reversal of 646708130 is 31807646.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (646708133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10730 + ... + 37530.

It is an arithmetic number, because the mean of its divisors is an integer number (38594880).

Almost surely, 2^646708130 is an apocalyptic number.

646708130 is a deficient number, since it is larger than the sum of its proper divisors (588328030).

646708130 is a wasteful number, since it uses less digits than its factorization.

646708130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26954.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 646708130 is about 25430.4567399015. The cubic root of 646708130 is about 864.7742982030.

The spelling of 646708130 in words is "six hundred forty-six million, seven hundred eight thousand, one hundred thirty".