36719561 has 2 divisors, whose sum is σ = 36719562. Its totient is φ = 36719560.

The previous prime is 36719537. The next prime is 36719581. The reversal of 36719561 is 16591763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22619536 + 14100025 = 4756^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 36719561 - 2⁶ = 36719497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36719581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18359780 + 18359781.

It is an arithmetic number, because the mean of its divisors is an integer number (18359781).

Almost surely, 2^36719561 is an apocalyptic number.

It is an amenable number.

36719561 is a deficient number, since it is larger than the sum of its proper divisors (1).

36719561 is an equidigital number, since it uses as much as digits as its factorization.

36719561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 38.

The square root of 36719561 is about 6059.6667400114. Note that the first 3 decimals coincide. The cubic root of 36719561 is about 332.3781708303.

The spelling of 36719561 in words is "thirty-six million, seven hundred nineteen thousand, five hundred sixty-one".