366496561 has 4 divisors (see below), whose sum is σ = 368831092. Its totient is φ = 364162032.

The previous prime is 366496547. The next prime is 366496607. The reversal of 366496561 is 165694663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165694663 = 1117 ⋅148339.

It can be written as a sum of positive squares in 2 ways, for example, as 124880625 + 241615936 = 11175^2 + 15544^2 .

It is a cyclic number.

It is not a de Polignac number, because 366496561 - 2¹⁵ = 366463793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (366496511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167030 + ... + 1167343.

It is an arithmetic number, because the mean of its divisors is an integer number (92207773).

Almost surely, 2^366496561 is an apocalyptic number.

It is an amenable number.

366496561 is a deficient number, since it is larger than the sum of its proper divisors (2334531).

366496561 is a wasteful number, since it uses less digits than its factorization.

366496561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334530.

The product of its digits is 699840, while the sum is 46.

The square root of 366496561 is about 19144.0999004915. The cubic root of 366496561 is about 715.6323556283.

The spelling of 366496561 in words is "three hundred sixty-six million, four hundred ninety-six thousand, five hundred sixty-one".