361665823 has 8 divisors (see below), whose sum is σ = 377699328. Its totient is φ = 345658104.

The previous prime is 361665781. The next prime is 361665833. The reversal of 361665823 is 328566163.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 361665823 - 2²⁵ = 328111391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361665833) 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, 25690 + ... + 37192.

It is an arithmetic number, because the mean of its divisors is an integer number (47212416).

Almost surely, 2^361665823 is an apocalyptic number.

361665823 is a deficient number, since it is larger than the sum of its proper divisors (16033505).

361665823 is a wasteful number, since it uses less digits than its factorization.

361665823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12893.

The product of its digits is 155520, while the sum is 40.

The square root of 361665823 is about 19017.5135861658. The cubic root of 361665823 is about 712.4742236699.

The spelling of 361665823 in words is "three hundred sixty-one million, six hundred sixty-five thousand, eight hundred twenty-three".