361664636 has 12 divisors (see below), whose sum is σ = 638514912. Its totient is φ = 179231808.

The previous prime is 361664587. The next prime is 361664683. The reversal of 361664636 is 636466163.

It is a junction number, because it is equal to n+sod(n) for n = 361664593 and 361664602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399620 + ... + 400523.

It is an arithmetic number, because the mean of its divisors is an integer number (53209576).

Almost surely, 2^361664636 is an apocalyptic number.

It is an amenable number.

361664636 is a deficient number, since it is larger than the sum of its proper divisors (276850276).

361664636 is a wasteful number, since it uses less digits than its factorization.

361664636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800260 (or 800258 counting only the distinct ones).

The product of its digits is 279936, while the sum is 41.

The square root of 361664636 is about 19017.4823780647. The cubic root of 361664636 is about 712.4734442139.

The spelling of 361664636 in words is "three hundred sixty-one million, six hundred sixty-four thousand, six hundred thirty-six".