73861691 has 2 divisors, whose sum is σ = 73861692. Its totient is φ = 73861690.

The previous prime is 73861643. The next prime is 73861703. The reversal of 73861691 is 19616837.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73861691 - 2¹⁰ = 73860667 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73861631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36930845 + 36930846.

It is an arithmetic number, because the mean of its divisors is an integer number (36930846).

Almost surely, 2^73861691 is an apocalyptic number.

73861691 is a deficient number, since it is larger than the sum of its proper divisors (1).

73861691 is an equidigital number, since it uses as much as digits as its factorization.

73861691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 73861691 is about 8594.2824598683. The cubic root of 73861691 is about 419.5719202202.

The spelling of 73861691 in words is "seventy-three million, eight hundred sixty-one thousand, six hundred ninety-one".