693137969 has 4 divisors (see below), whose sum is σ = 693371940. Its totient is φ = 692904000.

The previous prime is 693137927. The next prime is 693137987. The reversal of 693137969 is 969731396.

It is a happy number.

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 334414369 + 358723600 = 18287^2 + 18940^2 .

It is a cyclic number.

It is not a de Polignac number, because 693137969 - 2¹² = 693133873 is a prime.

It is a super-2 number, since 2×693137969² = 960880488138889922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 693137969.

It is not an unprimeable number, because it can be changed into a prime (693137069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112484 + ... + 118485.

It is an arithmetic number, because the mean of its divisors is an integer number (173342985).

Almost surely, 2^693137969 is an apocalyptic number.

It is an amenable number.

693137969 is a deficient number, since it is larger than the sum of its proper divisors (233971).

693137969 is a wasteful number, since it uses less digits than its factorization.

693137969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233970.

The product of its digits is 1653372, while the sum is 53.

The square root of 693137969 is about 26327.5135362229. The cubic root of 693137969 is about 884.9931241020.

The spelling of 693137969 in words is "six hundred ninety-three million, one hundred thirty-seven thousand, nine hundred sixty-nine".