20064757 has 8 divisors (see below), whose sum is σ = 20317536. Its totient is φ = 19813872.

The previous prime is 20064749. The next prime is 20064769. The reversal of 20064757 is 75746002.

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 20064757 - 2³ = 20064749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20064727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35358 + ... + 35920.

It is an arithmetic number, because the mean of its divisors is an integer number (2539692).

Almost surely, 2^20064757 is an apocalyptic number.

It is an amenable number.

20064757 is a deficient number, since it is larger than the sum of its proper divisors (252779).

20064757 is a wasteful number, since it uses less digits than its factorization.

20064757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 20064757 is about 4479.3701566180. The cubic root of 20064757 is about 271.7344086067.

It can be divided in two parts, 200647 and 57, that added together give a square (200704 = 448²).

The spelling of 20064757 in words is "twenty million, sixty-four thousand, seven hundred fifty-seven".