690469248 has 128 divisors (see below), whose sum is σ = 2130935040. Its totient is φ = 193996800.

The previous prime is 690469217. The next prime is 690469261. The reversal of 690469248 is 842964096.

It is a tau number, because it is divible by the number of its divisors (128).

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

It is a junction number, because it is equal to n+sod(n) for n = 690469197 and 690469206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161863 + ... + 166073.

It is an arithmetic number, because the mean of its divisors is an integer number (16647930).

Almost surely, 2^690469248 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 690469248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1065467520).

690469248 is an abundant number, since it is smaller than the sum of its proper divisors (1440465792).

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

690469248 is a wasteful number, since it uses less digits than its factorization.

690469248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296 (or 4284 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 690469248 is about 26276.7815380803. The cubic root of 690469248 is about 883.8558626061.

The spelling of 690469248 in words is "six hundred ninety million, four hundred sixty-nine thousand, two hundred forty-eight".