20064751 has 8 divisors (see below), whose sum is σ = 23033120. Its totient is φ = 17121888.

The previous prime is 20064749. The next prime is 20064769. The reversal of 20064751 is 15746002.

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

It is not a de Polignac number, because 20064751 - 2¹ = 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 (20064701) 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, 4656 + ... + 7861.

It is an arithmetic number, because the mean of its divisors is an integer number (2879140).

Almost surely, 2^20064751 is an apocalyptic number.

20064751 is a deficient number, since it is larger than the sum of its proper divisors (2968369).

20064751 is a wasteful number, since it uses less digits than its factorization.

20064751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12753.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 20064751 is about 4479.3694868809. The cubic root of 20064751 is about 271.7343815210.

The spelling of 20064751 in words is "twenty million, sixty-four thousand, seven hundred fifty-one".