804161623 has 2 divisors, whose sum is σ = 804161624. Its totient is φ = 804161622.

The previous prime is 804161621. The next prime is 804161629. The reversal of 804161623 is 326161408.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 804161623 - 2¹ = 804161621 is a prime.

Together with 804161621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804161621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402080811 + 402080812.

It is an arithmetic number, because the mean of its divisors is an integer number (402080812).

Almost surely, 2^804161623 is an apocalyptic number.

804161623 is a deficient number, since it is larger than the sum of its proper divisors (1).

804161623 is an equidigital number, since it uses as much as digits as its factorization.

804161623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 804161623 is about 28357.7436161624. The cubic root of 804161623 is about 929.9246954095.

The spelling of 804161623 in words is "eight hundred four million, one hundred sixty-one thousand, six hundred twenty-three".