20770017 has 8 divisors (see below), whose sum is σ = 27721824. Its totient is φ = 13832448.

The previous prime is 20769967. The next prime is 20770049. The reversal of 20770017 is 71007702.

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

It is not a de Polignac number, because 20770017 - 2²³ = 12381409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20770517) 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, 513 + ... + 6465.

It is an arithmetic number, because the mean of its divisors is an integer number (3465228).

Almost surely, 2^20770017 is an apocalyptic number.

It is an amenable number.

20770017 is a deficient number, since it is larger than the sum of its proper divisors (6951807).

20770017 is a wasteful number, since it uses less digits than its factorization.

20770017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7119.

The product of its (nonzero) digits is 686, while the sum is 24.

The square root of 20770017 is about 4557.4134111358. The cubic root of 20770017 is about 274.8815666329.

Adding to 20770017 its reverse (71007702), we get a palindrome (91777719).

The spelling of 20770017 in words is "twenty million, seven hundred seventy thousand, seventeen".