696426385 has 4 divisors (see below), whose sum is σ = 835711668. Its totient is φ = 557141104.

The previous prime is 696426373. The next prime is 696426449. The reversal of 696426385 is 583624696.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149989009 + 546437376 = 12247^2 + 23376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-696426385 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69642634 + ... + 69642643.

It is an arithmetic number, because the mean of its divisors is an integer number (208927917).

Almost surely, 2^696426385 is an apocalyptic number.

It is an amenable number.

696426385 is a deficient number, since it is larger than the sum of its proper divisors (139285283).

696426385 is a wasteful number, since it uses less digits than its factorization.

696426385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139285282.

The product of its digits is 1866240, while the sum is 49.

The square root of 696426385 is about 26389.8917201265. The cubic root of 696426385 is about 886.3904579169.

The spelling of 696426385 in words is "six hundred ninety-six million, four hundred twenty-six thousand, three hundred eighty-five".