646162253 has 16 divisors (see below), whose sum is σ = 760924800. Its totient is φ = 542498880.

The previous prime is 646162249. The next prime is 646162259. The reversal of 646162253 is 352261646.

It is a happy number.

646162253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 646162253 - 2² = 646162249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646162259) 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, 36698 + ... + 51371.

It is an arithmetic number, because the mean of its divisors is an integer number (47557800).

Almost surely, 2^646162253 is an apocalyptic number.

It is an amenable number.

646162253 is a deficient number, since it is larger than the sum of its proper divisors (114762547).

646162253 is a wasteful number, since it uses less digits than its factorization.

646162253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88132.

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

The square root of 646162253 is about 25419.7217333314. The cubic root of 646162253 is about 864.5309152096.

The spelling of 646162253 in words is "six hundred forty-six million, one hundred sixty-two thousand, two hundred fifty-three".