689552133 has 4 divisors (see below), whose sum is σ = 919402848. Its totient is φ = 459701420.

The previous prime is 689552107. The next prime is 689552197. The reversal of 689552133 is 331255986.

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 689552133 - 2⁶ = 689552069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689552033) 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, 114925353 + ... + 114925358.

It is an arithmetic number, because the mean of its divisors is an integer number (229850712).

Almost surely, 2^689552133 is an apocalyptic number.

It is an amenable number.

689552133 is a deficient number, since it is larger than the sum of its proper divisors (229850715).

689552133 is a wasteful number, since it uses less digits than its factorization.

689552133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229850714.

The product of its digits is 194400, while the sum is 42.

The square root of 689552133 is about 26259.3246866708. The cubic root of 689552133 is about 883.4643623674.

The spelling of 689552133 in words is "six hundred eighty-nine million, five hundred fifty-two thousand, one hundred thirty-three".