689842291140 has 72 divisors (see below), whose sum is σ = 2141184933888. Its totient is φ = 179679850560.

The previous prime is 689842291129. The next prime is 689842291163. The reversal of 689842291140 is 41192248986.

It is a happy number.

689842291140 is a `hidden beast` number, since 6 + 8 + 98 + 422 + 91 + 1 + 40 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44555716 + ... + 44571195.

Almost surely, 2^689842291140 is an apocalyptic number.

689842291140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689842291140 is an abundant number, since it is smaller than the sum of its proper divisors (1451342642748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

689842291140 is a wasteful number, since it uses less digits than its factorization.

689842291140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89126969 (or 89126964 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 689842291140 in words is "six hundred eighty-nine billion, eight hundred forty-two million, two hundred ninety-one thousand, one hundred forty".