697499893 has 2 divisors, whose sum is σ = 697499894. Its totient is φ = 697499892.

The previous prime is 697499867. The next prime is 697499903. The reversal of 697499893 is 398994796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 551404324 + 146095569 = 23482^2 + 12087^2 .

It is a cyclic number.

It is not a de Polignac number, because 697499893 - 2¹⁷ = 697368821 is a prime.

It is a super-2 number, since 2×697499893² = 973012201470022898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697499833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348749946 + 348749947.

It is an arithmetic number, because the mean of its divisors is an integer number (348749947).

Almost surely, 2^697499893 is an apocalyptic number.

It is an amenable number.

697499893 is a deficient number, since it is larger than the sum of its proper divisors (1).

697499893 is an equidigital number, since it uses as much as digits as its factorization.

697499893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 64.

The square root of 697499893 is about 26410.2232667579. The cubic root of 697499893 is about 886.8456669502.

The spelling of 697499893 in words is "six hundred ninety-seven million, four hundred ninety-nine thousand, eight hundred ninety-three".