690669072 has 80 divisors (see below), whose sum is σ = 1985825280. Its totient is φ = 229834368.

The previous prime is 690669071. The next prime is 690669097. The reversal of 690669072 is 270966096.

It is not an unprimeable number, because it can be changed into a prime (690669071) 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 in 15 ways as a sum of consecutive naturals, for example, 377953 + ... + 379775.

It is an arithmetic number, because the mean of its divisors is an integer number (24822816).

Almost surely, 2^690669072 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 690669072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992912640).

690669072 is an abundant number, since it is smaller than the sum of its proper divisors (1295156208).

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

690669072 is a wasteful number, since it uses less digits than its factorization.

690669072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717 (or 2705 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 690669072 is about 26280.5835551648. The cubic root of 690669072 is about 883.9411179497.

The spelling of 690669072 in words is "six hundred ninety million, six hundred sixty-nine thousand, seventy-two".