690447573 has 12 divisors (see below), whose sum is σ = 1031703660. Its totient is φ = 444425856.

The previous prime is 690447553. The next prime is 690447577. The reversal of 690447573 is 375744096.

690447573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 394538769 + 295908804 = 19863^2 + 17202^2 .

It is not a de Polignac number, because 690447573 - 2²⁸ = 422012117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690447577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1322436 + ... + 1322957.

It is an arithmetic number, because the mean of its divisors is an integer number (85975305).

Almost surely, 2^690447573 is an apocalyptic number.

It is an amenable number.

690447573 is a deficient number, since it is larger than the sum of its proper divisors (341256087).

690447573 is a wasteful number, since it uses less digits than its factorization.

690447573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2645428 (or 2645425 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 690447573 is about 26276.3690984885. The cubic root of 690447573 is about 883.8466139315.

The spelling of 690447573 in words is "six hundred ninety million, four hundred forty-seven thousand, five hundred seventy-three".