612065844 has 36 divisors (see below), whose sum is σ = 1666180516. Its totient is φ = 188327808.

The previous prime is 612065813. The next prime is 612065849. The reversal of 612065844 is 448560216.

It can be written as a sum of positive squares in 2 ways, for example, as 282643344 + 329422500 = 16812^2 + 18150^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 612065799 and 612065808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612065849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 653449 + ... + 654384.

Almost surely, 2^612065844 is an apocalyptic number.

It is an amenable number.

612065844 is an abundant number, since it is smaller than the sum of its proper divisors (1054114672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612065844 is a wasteful number, since it uses less digits than its factorization.

612065844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307856 (or 1307851 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 612065844 is about 24739.9645108880. The cubic root of 612065844 is about 849.0489219188.

The spelling of 612065844 in words is "six hundred twelve million, sixty-five thousand, eight hundred forty-four".