20460717 has 12 divisors (see below), whose sum is σ = 29826940. Its totient is φ = 13514688.

The previous prime is 20460697. The next prime is 20460721. The reversal of 20460717 is 71706402.

It can be written as a sum of positive squares in 2 ways, for example, as 17816841 + 2643876 = 4221^2 + 1626^2 .

It is not a de Polignac number, because 20460717 - 2⁶ = 20460653 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 (20460757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9448 + ... + 11409.

Almost surely, 2^20460717 is an apocalyptic number.

It is an amenable number.

20460717 is a deficient number, since it is larger than the sum of its proper divisors (9366223).

20460717 is a wasteful number, since it uses less digits than its factorization.

20460717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20972 (or 20969 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20460717 is about 4523.3524072307. The cubic root of 20460717 is about 273.5102561028.

The spelling of 20460717 in words is "twenty million, four hundred sixty thousand, seven hundred seventeen".