696695309 has 8 divisors (see below), whose sum is σ = 740010168. Its totient is φ = 653639680.

The previous prime is 696695257. The next prime is 696695327. The reversal of 696695309 is 903596696.

It can be written as a sum of positive squares in 4 ways, for example, as 224850025 + 471845284 = 14995^2 + 21722^2 .

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 696695309 - 2²⁴ = 679918093 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 (696695509) 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, 59252 + ... + 70029.

It is an arithmetic number, because the mean of its divisors is an integer number (92501271).

Almost surely, 2^696695309 is an apocalyptic number.

It is an amenable number.

696695309 is a deficient number, since it is larger than the sum of its proper divisors (43314859).

696695309 is a wasteful number, since it uses less digits than its factorization.

696695309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129615.

The product of its (nonzero) digits is 2361960, while the sum is 53.

The square root of 696695309 is about 26394.9864368217. The cubic root of 696695309 is about 886.5045360147.

The spelling of 696695309 in words is "six hundred ninety-six million, six hundred ninety-five thousand, three hundred nine".