689457632 has 12 divisors (see below), whose sum is σ = 1357369776. Its totient is φ = 344728800.

The previous prime is 689457631. The next prime is 689457649. The reversal of 689457632 is 236754986.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689457631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10772744 + ... + 10772807.

It is an arithmetic number, because the mean of its divisors is an integer number (113114148).

Almost surely, 2^689457632 is an apocalyptic number.

It is an amenable number.

689457632 is a deficient number, since it is larger than the sum of its proper divisors (667912144).

689457632 is a wasteful number, since it uses less digits than its factorization.

689457632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21545561 (or 21545553 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The square root of 689457632 is about 26257.5252451559. The cubic root of 689457632 is about 883.4240018319.

The spelling of 689457632 in words is "six hundred eighty-nine million, four hundred fifty-seven thousand, six hundred thirty-two".