612144436 has 24 divisors (see below), whose sum is σ = 1091863080. Its totient is φ = 300240000.

The previous prime is 612144427. The next prime is 612144439. The reversal of 612144436 is 634441216.

It can be written as a sum of positive squares in 4 ways, for example, as 409252900 + 202891536 = 20230^2 + 14244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 612144398 and 612144407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612144439) 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, 37086 + ... + 50986.

It is an arithmetic number, because the mean of its divisors is an integer number (45494295).

Almost surely, 2^612144436 is an apocalyptic number.

It is an amenable number.

612144436 is a deficient number, since it is larger than the sum of its proper divisors (479718644).

612144436 is a wasteful number, since it uses less digits than its factorization.

612144436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14115 (or 14113 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 612144436 is about 24741.5528211145. The cubic root of 612144436 is about 849.0852609269.

The spelling of 612144436 in words is "six hundred twelve million, one hundred forty-four thousand, four hundred thirty-six".