689584077 has 128 divisors (see below), whose sum is σ = 1319915520. Its totient is φ = 346187520.

The previous prime is 689584019. The next prime is 689584079. The reversal of 689584077 is 770485986.

It is not a de Polignac number, because 689584077 - 2⁶ = 689584013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689584079) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6444658 + ... + 6444764.

It is an arithmetic number, because the mean of its divisors is an integer number (10311840).

Almost surely, 2^689584077 is an apocalyptic number.

It is an amenable number.

689584077 is a deficient number, since it is larger than the sum of its proper divisors (630331443).

689584077 is a wasteful number, since it uses less digits than its factorization.

689584077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The square root of 689584077 is about 26259.9329207064. The cubic root of 689584077 is about 883.4780045314.

The spelling of 689584077 in words is "six hundred eighty-nine million, five hundred eighty-four thousand, seventy-seven".