646650134 has 16 divisors (see below), whose sum is σ = 1045132368. Its totient is φ = 298298592.

The previous prime is 646650127. The next prime is 646650143. The reversal of 646650134 is 431056646.

It is a junction number, because it is equal to n+sod(n) for n = 646650094 and 646650103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55724 + ... + 66320.

It is an arithmetic number, because the mean of its divisors is an integer number (65320773).

Almost surely, 2^646650134 is an apocalyptic number.

646650134 is a deficient number, since it is larger than the sum of its proper divisors (398482234).

646650134 is a wasteful number, since it uses less digits than its factorization.

646650134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12959.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 646650134 is about 25429.3164280914. The cubic root of 646650134 is about 864.7484467938.

The spelling of 646650134 in words is "six hundred forty-six million, six hundred fifty thousand, one hundred thirty-four".