689909133 has 32 divisors (see below), whose sum is σ = 985600000. Its totient is φ = 428006592.

The previous prime is 689909107. The next prime is 689909153. The reversal of 689909133 is 331909986.

It is a happy number.

It is not a de Polignac number, because 689909133 - 2²⁸ = 421473677 is a prime.

It is a super-2 number, since 2×689909133² = 951949223593623378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689909153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1571328 + ... + 1571766.

It is an arithmetic number, because the mean of its divisors is an integer number (30800000).

Almost surely, 2^689909133 is an apocalyptic number.

It is an amenable number.

689909133 is a deficient number, since it is larger than the sum of its proper divisors (295690867).

689909133 is a wasteful number, since it uses less digits than its factorization.

689909133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 689909133 is about 26266.1213923944. The cubic root of 689909133 is about 883.6168006183.

The spelling of 689909133 in words is "six hundred eighty-nine million, nine hundred nine thousand, one hundred thirty-three".