696052809 has 18 divisors (see below), whose sum is σ = 1041285726. Its totient is φ = 448029120.

The previous prime is 696052807. The next prime is 696052823. The reversal of 696052809 is 908250696.

696052809 is a `hidden beast` number, since 69 + 60 + 528 + 0 + 9 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 73051209 + 623001600 = 8547^2 + 24960^2 .

It is not a de Polignac number, because 696052809 - 2¹ = 696052807 is a prime.

It is a super-3 number, since 3×696052809³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696052801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 38412 + ... + 53549.

It is an arithmetic number, because the mean of its divisors is an integer number (57849207).

Almost surely, 2^696052809 is an apocalyptic number.

It is an amenable number.

696052809 is a deficient number, since it is larger than the sum of its proper divisors (345232917).

696052809 is a wasteful number, since it uses less digits than its factorization.

696052809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92025 (or 91993 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 696052809 is about 26382.8127575511. The cubic root of 696052809 is about 886.2319374878.

The spelling of 696052809 in words is "six hundred ninety-six million, fifty-two thousand, eight hundred nine".