4020799657 has 8 divisors (see below), whose sum is σ = 4719394496. Its totient is φ = 3353253552.

The previous prime is 4020799639. The next prime is 4020799681. The reversal of 4020799657 is 7569970204.

4020799657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4020799657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4020799657.

It is not an unprimeable number, because it can be changed into a prime (4020799697) 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, 7761903 + ... + 7762420.

It is an arithmetic number, because the mean of its divisors is an integer number (589924312).

Almost surely, 2^4020799657 is an apocalyptic number.

It is an amenable number.

4020799657 is a deficient number, since it is larger than the sum of its proper divisors (698594839).

4020799657 is a wasteful number, since it uses less digits than its factorization.

4020799657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15524367.

The product of its (nonzero) digits is 952560, while the sum is 49.

The square root of 4020799657 is about 63409.7757210984. The cubic root of 4020799657 is about 1590.1477463803.

The spelling of 4020799657 in words is "four billion, twenty million, seven hundred ninety-nine thousand, six hundred fifty-seven".