361686836 has 36 divisors (see below), whose sum is σ = 737835588. Its totient is φ = 154683648.

The previous prime is 361686823. The next prime is 361686839. The reversal of 361686836 is 638686163.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 184796836 + 176890000 = 13594^2 + 13300^2 .

Its product of digits (746496) is a multiple of the sum of its prime factors (3888).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361686839) 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, 107516 + ... + 110828.

It is an arithmetic number, because the mean of its divisors is an integer number (20495433).

Almost surely, 2^361686836 is an apocalyptic number.

It is an amenable number.

361686836 is an abundant number, since it is smaller than the sum of its proper divisors (376148752).

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

361686836 is a wasteful number, since it uses less digits than its factorization.

361686836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888 (or 3879 counting only the distinct ones).

The product of its digits is 746496, while the sum is 47.

The square root of 361686836 is about 19018.0660425817. The cubic root of 361686836 is about 712.4880217951.

The spelling of 361686836 in words is "three hundred sixty-one million, six hundred eighty-six thousand, eight hundred thirty-six".