20617413 has 16 divisors (see below), whose sum is σ = 30640320. Its totient is φ = 12254976.

The previous prime is 20617411. The next prime is 20617417. The reversal of 20617413 is 31471602.

It is not a de Polignac number, because 20617413 - 2¹ = 20617411 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20617411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9670 + ... + 11607.

It is an arithmetic number, because the mean of its divisors is an integer number (1915020).

Almost surely, 2^20617413 is an apocalyptic number.

It is an amenable number.

20617413 is a deficient number, since it is larger than the sum of its proper divisors (10022907).

20617413 is a wasteful number, since it uses less digits than its factorization.

20617413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21316.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20617413 is about 4540.6401531062. The cubic root of 20617413 is about 274.2066966472.

The spelling of 20617413 in words is "twenty million, six hundred seventeen thousand, four hundred thirteen".