689646341 has 4 divisors (see below), whose sum is σ = 705684672. Its totient is φ = 673608012.

The previous prime is 689646313. The next prime is 689646409. The reversal of 689646341 is 143646986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 689646341 - 2⁶ = 689646277 is a prime.

It is a super-2 number, since 2×689646341² = 951224151309376562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689646301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8019101 + ... + 8019186.

It is an arithmetic number, because the mean of its divisors is an integer number (176421168).

Almost surely, 2^689646341 is an apocalyptic number.

It is an amenable number.

689646341 is a deficient number, since it is larger than the sum of its proper divisors (16038331).

689646341 is a wasteful number, since it uses less digits than its factorization.

689646341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16038330.

The product of its digits is 746496, while the sum is 47.

The square root of 689646341 is about 26261.1184262971. The cubic root of 689646341 is about 883.5045940949.

The spelling of 689646341 in words is "six hundred eighty-nine million, six hundred forty-six thousand, three hundred forty-one".