689096064 has 32 divisors (see below), whose sum is σ = 1830412440. Its totient is φ = 229698560.

The previous prime is 689096039. The next prime is 689096081. The reversal of 689096064 is 460690986.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896877 + ... + 897644.

Almost surely, 2^689096064 is an apocalyptic number.

689096064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

689096064 is an abundant number, since it is smaller than the sum of its proper divisors (1141316376).

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

689096064 is a wasteful number, since it uses less digits than its factorization.

689096064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794538 (or 1794526 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 689096064 is about 26250.6393065007. The cubic root of 689096064 is about 883.2695453008.

The spelling of 689096064 in words is "six hundred eighty-nine million, ninety-six thousand, sixty-four".