361864647 has 24 divisors (see below), whose sum is σ = 540697248. Its totient is φ = 233049600.

The previous prime is 361864603. The next prime is 361864661. The reversal of 361864647 is 746468163.

It is a happy number.

361864647 is a `hidden beast` number, since 3 + 6 + 186 + 464 + 7 = 666.

It is not a de Polignac number, because 361864647 - 2¹⁵ = 361831879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361864667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33247 + ... + 42767.

It is an arithmetic number, because the mean of its divisors is an integer number (22529052).

Almost surely, 2^361864647 is an apocalyptic number.

361864647 is a deficient number, since it is larger than the sum of its proper divisors (178832601).

361864647 is a wasteful number, since it uses less digits than its factorization.

361864647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9671 (or 9668 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 361864647 is about 19022.7402600151. The cubic root of 361864647 is about 712.6047594809.

It can be divided in two parts, 3618 and 64647, that added together give a triangular number (68265 = T₃₆₉).

The spelling of 361864647 in words is "three hundred sixty-one million, eight hundred sixty-four thousand, six hundred forty-seven".