20057699 has 8 divisors (see below), whose sum is σ = 20681520. Its totient is φ = 19443456.

The previous prime is 20057683. The next prime is 20057717. The reversal of 20057699 is 99675002.

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 20057699 - 2⁴ = 20057683 is a prime.

It is a super-2 number, since 2×20057699² = 804622578349202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20057629) 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 7 ways as a sum of consecutive naturals, for example, 1979 + ... + 6635.

It is an arithmetic number, because the mean of its divisors is an integer number (2585190).

Almost surely, 2^20057699 is an apocalyptic number.

20057699 is a deficient number, since it is larger than the sum of its proper divisors (623821).

20057699 is an equidigital number, since it uses as much as digits as its factorization.

20057699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4789.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 20057699 is about 4478.5822533476. The cubic root of 20057699 is about 271.7025430097.

The spelling of 20057699 in words is "twenty million, fifty-seven thousand, six hundred ninety-nine".