612812853 has 6 divisors (see below), whose sum is σ = 885174134. Its totient is φ = 408541896.

The previous prime is 612812843. The next prime is 612812869. The reversal of 612812853 is 358218216.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 379548324 + 233264529 = 19482^2 + 15273^2 .

It is not a de Polignac number, because 612812853 - 2⁸ = 612812597 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 (612812803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34045150 + ... + 34045167.

Almost surely, 2^612812853 is an apocalyptic number.

It is an amenable number.

612812853 is a deficient number, since it is larger than the sum of its proper divisors (272361281).

612812853 is a wasteful number, since it uses less digits than its factorization.

612812853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68090323 (or 68090320 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 612812853 is about 24755.0571197079. The cubic root of 612812853 is about 849.3941948663.

It can be divided in two parts, 6128 and 12853, that added together give a palindrome (18981).

The spelling of 612812853 in words is "six hundred twelve million, eight hundred twelve thousand, eight hundred fifty-three".