369087561 has 12 divisors (see below), whose sum is σ = 564487092. Its totient is φ = 231584256.

The previous prime is 369087547. The next prime is 369087613. The reversal of 369087561 is 165780963.

It is a happy number.

369087561 is a `hidden beast` number, since 3 + 6 + 9 + 0 + 87 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 297769536 + 71318025 = 17256^2 + 8445^2 .

It is not a de Polignac number, because 369087561 - 2⁶ = 369087497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (369087661) 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, 1206016 + ... + 1206321.

It is an arithmetic number, because the mean of its divisors is an integer number (47040591).

Almost surely, 2^369087561 is an apocalyptic number.

It is an amenable number.

369087561 is a deficient number, since it is larger than the sum of its proper divisors (195399531).

369087561 is a wasteful number, since it uses less digits than its factorization.

369087561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412360 (or 2412357 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 369087561 is about 19211.6516989040. The cubic root of 369087561 is about 717.3148188875.

The spelling of 369087561 in words is "three hundred sixty-nine million, eighty-seven thousand, five hundred sixty-one".