20601716 has 12 divisors (see below), whose sum is σ = 37296420. Its totient is φ = 9945600.

The previous prime is 20601703. The next prime is 20601743. The reversal of 20601716 is 61710602.

It can be written as a sum of positive squares in 2 ways, for example, as 5779216 + 14822500 = 2404^2 + 3850^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20601691 and 20601700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88685 + ... + 88916.

It is an arithmetic number, because the mean of its divisors is an integer number (3108035).

Almost surely, 2^20601716 is an apocalyptic number.

It is an amenable number.

20601716 is a deficient number, since it is larger than the sum of its proper divisors (16694704).

20601716 is a wasteful number, since it uses less digits than its factorization.

20601716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177634 (or 177632 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20601716 is about 4538.9113232140. The cubic root of 20601716 is about 274.1370901885.

The spelling of 20601716 in words is "twenty million, six hundred one thousand, seven hundred sixteen".