689696593449 has 8 divisors (see below), whose sum is σ = 919599759552. Its totient is φ = 459795578160.

The previous prime is 689696593351. The next prime is 689696593463. The reversal of 689696593449 is 944395696986.

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

It is not a de Polignac number, because 689696593449 - 2¹¹ = 689696591401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689696593249) 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, 492492 + ... + 1273554.

It is an arithmetic number, because the mean of its divisors is an integer number (114949969944).

Almost surely, 2^689696593449 is an apocalyptic number.

It is an amenable number.

689696593449 is a deficient number, since it is larger than the sum of its proper divisors (229903166103).

689696593449 is a wasteful number, since it uses less digits than its factorization.

689696593449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075407.

The product of its digits is 2720977920, while the sum is 78.

The spelling of 689696593449 in words is "six hundred eighty-nine billion, six hundred ninety-six million, five hundred ninety-three thousand, four hundred forty-nine".