894775621 has 2 divisors, whose sum is σ = 894775622. Its totient is φ = 894775620.

The previous prime is 894775591. The next prime is 894775631. The reversal of 894775621 is 126577498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 859134721 + 35640900 = 29311^2 + 5970^2 .

It is a cyclic number.

It is not a de Polignac number, because 894775621 - 2¹¹ = 894773573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (894775631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447387810 + 447387811.

It is an arithmetic number, because the mean of its divisors is an integer number (447387811).

Almost surely, 2^894775621 is an apocalyptic number.

It is an amenable number.

894775621 is a deficient number, since it is larger than the sum of its proper divisors (1).

894775621 is an equidigital number, since it uses as much as digits as its factorization.

894775621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 894775621 is about 29912.8002868337. The cubic root of 894775621 is about 963.6175793697.

The spelling of 894775621 in words is "eight hundred ninety-four million, seven hundred seventy-five thousand, six hundred twenty-one".