20416601 has 4 divisors (see below), whose sum is σ = 20430900. Its totient is φ = 20402304.

The previous prime is 20416597. The next prime is 20416603. The reversal of 20416601 is 10661402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12145225 + 8271376 = 3485^2 + 2876^2 .

It is a cyclic number.

It is not a de Polignac number, because 20416601 - 2² = 20416597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20416603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4736 + ... + 7953.

It is an arithmetic number, because the mean of its divisors is an integer number (5107725).

Almost surely, 2^20416601 is an apocalyptic number.

It is an amenable number.

20416601 is a deficient number, since it is larger than the sum of its proper divisors (14299).

20416601 is a wasteful number, since it uses less digits than its factorization.

20416601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14298.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20416601 is about 4518.4733041150. The cubic root of 20416601 is about 273.3135399442.

The spelling of 20416601 in words is "twenty million, four hundred sixteen thousand, six hundred one".