612163253 has 8 divisors (see below), whose sum is σ = 663454008. Its totient is φ = 561472704.

The previous prime is 612163249. The next prime is 612163259. The reversal of 612163253 is 352361216.

It can be written as a sum of positive squares in 4 ways, for example, as 12794929 + 599368324 = 3577^2 + 24482^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 612163253 - 2² = 612163249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612163259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147926 + ... + 152007.

It is an arithmetic number, because the mean of its divisors is an integer number (82931751).

Almost surely, 2^612163253 is an apocalyptic number.

It is an amenable number.

612163253 is a deficient number, since it is larger than the sum of its proper divisors (51290755).

612163253 is a wasteful number, since it uses less digits than its factorization.

612163253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300103.

The product of its digits is 6480, while the sum is 29.

The square root of 612163253 is about 24741.9330893930. The cubic root of 612163253 is about 849.0939609835.

The spelling of 612163253 in words is "six hundred twelve million, one hundred sixty-three thousand, two hundred fifty-three".