689954048 has 72 divisors (see below), whose sum is σ = 1579112640. Its totient is φ = 294727680.

The previous prime is 689954021. The next prime is 689954099. The reversal of 689954048 is 840459986.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933263 + ... + 934001.

It is an arithmetic number, because the mean of its divisors is an integer number (21932120).

Almost surely, 2^689954048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689954048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (789556320).

689954048 is an abundant number, since it is smaller than the sum of its proper divisors (889158592).

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

689954048 is an equidigital number, since it uses as much as digits as its factorization.

689954048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1269 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The square root of 689954048 is about 26266.9763771927. The cubic root of 689954048 is about 883.6359755045.

The spelling of 689954048 in words is "six hundred eighty-nine million, nine hundred fifty-four thousand, forty-eight".