1320576797 has 2 divisors, whose sum is σ = 1320576798. Its totient is φ = 1320576796.

The previous prime is 1320576793. The next prime is 1320576821. The reversal of 1320576797 is 7976750231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1302776836 + 17799961 = 36094^2 + 4219^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320576797 - 2² = 1320576793 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320576793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660288398 + 660288399.

It is an arithmetic number, because the mean of its divisors is an integer number (660288399).

Almost surely, 2^1320576797 is an apocalyptic number.

It is an amenable number.

1320576797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320576797 is an equidigital number, since it uses as much as digits as its factorization.

1320576797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 555660, while the sum is 47.

The square root of 1320576797 is about 36339.7412896680. The cubic root of 1320576797 is about 1097.1210660056.

The spelling of 1320576797 in words is "one billion, three hundred twenty million, five hundred seventy-six thousand, seven hundred ninety-seven".