696399553 has 2 divisors, whose sum is σ = 696399554. Its totient is φ = 696399552.

The previous prime is 696399521. The next prime is 696399559. The reversal of 696399553 is 355993696.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421768369 + 274631184 = 20537^2 + 16572^2 .

It is a cyclic number.

It is not a de Polignac number, because 696399553 - 2⁵ = 696399521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 696399494 and 696399503.

It is not a weakly prime, because it can be changed into another prime (696399559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348199776 + 348199777.

It is an arithmetic number, because the mean of its divisors is an integer number (348199777).

Almost surely, 2^696399553 is an apocalyptic number.

It is an amenable number.

696399553 is a deficient number, since it is larger than the sum of its proper divisors (1).

696399553 is an equidigital number, since it uses as much as digits as its factorization.

696399553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5904900, while the sum is 55.

The square root of 696399553 is about 26389.3833387595. The cubic root of 696399553 is about 886.3790741177.

The spelling of 696399553 in words is "six hundred ninety-six million, three hundred ninety-nine thousand, five hundred fifty-three".