20068477 has 8 divisors (see below), whose sum is σ = 23577120. Its totient is φ = 16840560.

The previous prime is 20068471. The next prime is 20068511. The reversal of 20068477 is 77486002.

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

It is not a de Polignac number, because 20068477 - 2³ = 20068469 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 (20068471) 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, 70027 + ... + 70312.

It is an arithmetic number, because the mean of its divisors is an integer number (2947140).

Almost surely, 2^20068477 is an apocalyptic number.

It is an amenable number.

20068477 is a deficient number, since it is larger than the sum of its proper divisors (3508643).

20068477 is a wasteful number, since it uses less digits than its factorization.

20068477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140363.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 20068477 is about 4479.7853743232. The cubic root of 20068477 is about 271.7512007286.

The spelling of 20068477 in words is "twenty million, sixty-eight thousand, four hundred seventy-seven".