6995920397 has 2 divisors, whose sum is σ = 6995920398. Its totient is φ = 6995920396.

The previous prime is 6995920369. The next prime is 6995920409. The reversal of 6995920397 is 7930295996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4576657801 + 2419262596 = 67651^2 + 49186^2 .

It is a cyclic number.

It is not a de Polignac number, because 6995920397 - 2¹⁶ = 6995854861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6995920697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3497960198 + 3497960199.

It is an arithmetic number, because the mean of its divisors is an integer number (3497960199).

Almost surely, 2^6995920397 is an apocalyptic number.

It is an amenable number.

6995920397 is a deficient number, since it is larger than the sum of its proper divisors (1).

6995920397 is an equidigital number, since it uses as much as digits as its factorization.

6995920397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8266860, while the sum is 59.

The square root of 6995920397 is about 83641.6188090594. The cubic root of 6995920397 is about 1912.5594915180.

The spelling of 6995920397 in words is "six billion, nine hundred ninety-five million, nine hundred twenty thousand, three hundred ninety-seven".