364780561 has 2 divisors, whose sum is σ = 364780562. Its totient is φ = 364780560.

The previous prime is 364780523. The next prime is 364780597. The reversal of 364780561 is 165087463.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323100625 + 41679936 = 17975^2 + 6456^2 .

It is a cyclic number.

It is not a de Polignac number, because 364780561 - 2⁷ = 364780433 is a prime.

It is not a weakly prime, because it can be changed into another prime (364780511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182390280 + 182390281.

It is an arithmetic number, because the mean of its divisors is an integer number (182390281).

Almost surely, 2^364780561 is an apocalyptic number.

It is an amenable number.

364780561 is a deficient number, since it is larger than the sum of its proper divisors (1).

364780561 is an equidigital number, since it uses as much as digits as its factorization.

364780561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 364780561 is about 19099.2293300018. The cubic root of 364780561 is about 714.5137032655.

The spelling of 364780561 in words is "three hundred sixty-four million, seven hundred eighty thousand, five hundred sixty-one".