920805673 has 2 divisors, whose sum is σ = 920805674. Its totient is φ = 920805672.

The previous prime is 920805671. The next prime is 920805703. The reversal of 920805673 is 376508029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 858900249 + 61905424 = 29307^2 + 7868^2 .

It is a cyclic number.

It is not a de Polignac number, because 920805673 - 2¹ = 920805671 is a prime.

Together with 920805671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (920805671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460402836 + 460402837.

It is an arithmetic number, because the mean of its divisors is an integer number (460402837).

Almost surely, 2^920805673 is an apocalyptic number.

It is an amenable number.

920805673 is a deficient number, since it is larger than the sum of its proper divisors (1).

920805673 is an equidigital number, since it uses as much as digits as its factorization.

920805673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 920805673 is about 30344.7799959070. The cubic root of 920805673 is about 972.8726522808.

The spelling of 920805673 in words is "nine hundred twenty million, eight hundred five thousand, six hundred seventy-three".