612213524 has 12 divisors (see below), whose sum is σ = 1153787124. Its totient is φ = 282560064.

The previous prime is 612213509. The next prime is 612213527. The reversal of 612213524 is 425312216.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 97377424 + 514836100 = 9868^2 + 22690^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 612213493 and 612213502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612213527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5886617 + ... + 5886720.

It is an arithmetic number, because the mean of its divisors is an integer number (96148927).

Almost surely, 2^612213524 is an apocalyptic number.

It is an amenable number.

612213524 is a deficient number, since it is larger than the sum of its proper divisors (541573600).

612213524 is a wasteful number, since it uses less digits than its factorization.

612213524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11773354 (or 11773352 counting only the distinct ones).

The product of its digits is 2880, while the sum is 26.

The square root of 612213524 is about 24742.9489754152. The cubic root of 612213524 is about 849.1172029503.

The spelling of 612213524 in words is "six hundred twelve million, two hundred thirteen thousand, five hundred twenty-four".