369561561 has 8 divisors (see below), whose sum is σ = 497829024. Its totient is φ = 243834240.

The previous prime is 369561547. The next prime is 369561581. The reversal of 369561561 is 165165963.

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

It is not a de Polignac number, because 369561561 - 2⁶ = 369561497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (369561541) 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, 634695 + ... + 635276.

It is an arithmetic number, because the mean of its divisors is an integer number (62228628).

Almost surely, 2^369561561 is an apocalyptic number.

It is an amenable number.

369561561 is a deficient number, since it is larger than the sum of its proper divisors (128267463).

369561561 is a wasteful number, since it uses less digits than its factorization.

369561561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270071.

The product of its digits is 145800, while the sum is 42.

The square root of 369561561 is about 19223.9840043629. The cubic root of 369561561 is about 717.6217575949.

It can be divided in two parts, 3695 and 61561, that added together give a palindrome (65256).

The spelling of 369561561 in words is "three hundred sixty-nine million, five hundred sixty-one thousand, five hundred sixty-one".