697199833901 has 2 divisors, whose sum is σ = 697199833902. Its totient is φ = 697199833900.

The previous prime is 697199833873. The next prime is 697199833921. The reversal of 697199833901 is 109338991796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 679139161801 + 18060672100 = 824099^2 + 134390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-697199833901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697199833921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348599916950 + 348599916951.

It is an arithmetic number, because the mean of its divisors is an integer number (348599916951).

Almost surely, 2^697199833901 is an apocalyptic number.

It is an amenable number.

697199833901 is a deficient number, since it is larger than the sum of its proper divisors (1).

697199833901 is an equidigital number, since it uses as much as digits as its factorization.

697199833901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19840464, while the sum is 65.

The spelling of 697199833901 in words is "six hundred ninety-seven billion, one hundred ninety-nine million, eight hundred thirty-three thousand, nine hundred one".