690443593 has 8 divisors (see below), whose sum is σ = 835494912. Its totient is φ = 556996416.

The previous prime is 690443581. The next prime is 690443609. The reversal of 690443593 is 395344096.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 690443593 - 2¹³ = 690435401 is a prime.

It is a super-2 number, since 2×690443593² = 953424710229499298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (690443543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2900905 + ... + 2901142.

It is an arithmetic number, because the mean of its divisors is an integer number (104436864).

Almost surely, 2^690443593 is an apocalyptic number.

It is an amenable number.

690443593 is a deficient number, since it is larger than the sum of its proper divisors (145051319).

690443593 is a wasteful number, since it uses less digits than its factorization.

690443593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5802071.

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 690443593 is about 26276.2933649326. The cubic root of 690443593 is about 883.8449156532.

The spelling of 690443593 in words is "six hundred ninety million, four hundred forty-three thousand, five hundred ninety-three".