697700261 has 8 divisors (see below), whose sum is σ = 700502040. Its totient is φ = 694904832.

The previous prime is 697700257. The next prime is 697700287. The reversal of 697700261 is 162007796.

697700261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8375236 + 689325025 = 2894^2 + 26255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 697700261 - 2² = 697700257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697700221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368405 + ... + 370293.

It is an arithmetic number, because the mean of its divisors is an integer number (87562755).

Almost surely, 2^697700261 is an apocalyptic number.

It is an amenable number.

697700261 is a deficient number, since it is larger than the sum of its proper divisors (2801779).

697700261 is a wasteful number, since it uses less digits than its factorization.

697700261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 697700261 is about 26414.0163738876. The cubic root of 697700261 is about 886.9305790205.

The spelling of 697700261 in words is "six hundred ninety-seven million, seven hundred thousand, two hundred sixty-one".