697246091 has 2 divisors, whose sum is σ = 697246092. Its totient is φ = 697246090.

The previous prime is 697246087. The next prime is 697246157. The reversal of 697246091 is 190642796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 697246091 - 2² = 697246087 is a prime.

It is a super-2 number, since 2×697246091² = 972304222829560562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (697246001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348623045 + 348623046.

It is an arithmetic number, because the mean of its divisors is an integer number (348623046).

Almost surely, 2^697246091 is an apocalyptic number.

697246091 is a deficient number, since it is larger than the sum of its proper divisors (1).

697246091 is an equidigital number, since it uses as much as digits as its factorization.

697246091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 697246091 is about 26405.4178342249. The cubic root of 697246091 is about 886.7380872395.

The spelling of 697246091 in words is "six hundred ninety-seven million, two hundred forty-six thousand, ninety-one".