646274334 has 32 divisors (see below), whose sum is σ = 1308577536. Its totient is φ = 212762880.

The previous prime is 646274323. The next prime is 646274339. The reversal of 646274334 is 433472646.

646274334 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 646274292 and 646274301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646274339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401359 + ... + 402965.

It is an arithmetic number, because the mean of its divisors is an integer number (40893048).

Almost surely, 2^646274334 is an apocalyptic number.

646274334 is an abundant number, since it is smaller than the sum of its proper divisors (662303202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646274334 is a wasteful number, since it uses less digits than its factorization.

646274334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400.

The product of its digits is 290304, while the sum is 39.

The square root of 646274334 is about 25421.9262448777. The cubic root of 646274334 is about 864.5808984695.

The spelling of 646274334 in words is "six hundred forty-six million, two hundred seventy-four thousand, three hundred thirty-four".