806620049 has 2 divisors, whose sum is σ = 806620050. Its totient is φ = 806620048.

The previous prime is 806619991. The next prime is 806620057. The reversal of 806620049 is 940026608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 642267649 + 164352400 = 25343^2 + 12820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806620049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (806620069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403310024 + 403310025.

It is an arithmetic number, because the mean of its divisors is an integer number (403310025).

Almost surely, 2^806620049 is an apocalyptic number.

It is an amenable number.

806620049 is a deficient number, since it is larger than the sum of its proper divisors (1).

806620049 is an equidigital number, since it uses as much as digits as its factorization.

806620049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 806620049 is about 28401.0571810276. The cubic root of 806620049 is about 930.8713646885.

The spelling of 806620049 in words is "eight hundred six million, six hundred twenty thousand, forty-nine".