697997305 has 16 divisors (see below), whose sum is σ = 895015440. Its totient is φ = 520722432.

The previous prime is 697997303. The next prime is 697997323. The reversal of 697997305 is 503799796.

It can be written as a sum of positive squares in 8 ways, for example, as 28015849 + 669981456 = 5293^2 + 25884^2 .

It is a cyclic number.

It is not a de Polignac number, because 697997305 - 2¹ = 697997303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (697997303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28404 + ... + 46933.

It is an arithmetic number, because the mean of its divisors is an integer number (55938465).

Almost surely, 2^697997305 is an apocalyptic number.

It is an amenable number.

697997305 is a deficient number, since it is larger than the sum of its proper divisors (197018135).

697997305 is a wasteful number, since it uses less digits than its factorization.

697997305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75468.

The product of its (nonzero) digits is 3214890, while the sum is 55.

The square root of 697997305 is about 26419.6386235694. The cubic root of 697997305 is about 887.0564305940.

The spelling of 697997305 in words is "six hundred ninety-seven million, nine hundred ninety-seven thousand, three hundred five".