693552149 has 2 divisors, whose sum is σ = 693552150. Its totient is φ = 693552148.

The previous prime is 693552137. The next prime is 693552157. The reversal of 693552149 is 941255396.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495952900 + 197599249 = 22270^2 + 14057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-693552149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (693552199) 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, 346776074 + 346776075.

It is an arithmetic number, because the mean of its divisors is an integer number (346776075).

Almost surely, 2^693552149 is an apocalyptic number.

It is an amenable number.

693552149 is a deficient number, since it is larger than the sum of its proper divisors (1).

693552149 is an equidigital number, since it uses as much as digits as its factorization.

693552149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 44.

The square root of 693552149 is about 26335.3782771389. The cubic root of 693552149 is about 885.1693629288.

The spelling of 693552149 in words is "six hundred ninety-three million, five hundred fifty-two thousand, one hundred forty-nine".