20641701 has 8 divisors (see below), whose sum is σ = 27687744. Its totient is φ = 13678400.

The previous prime is 20641679. The next prime is 20641717. The reversal of 20641701 is 10714602.

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

It is a cyclic number.

It is not a de Polignac number, because 20641701 - 2⁵ = 20641669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20641721) 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, 20100 + ... + 21101.

It is an arithmetic number, because the mean of its divisors is an integer number (3460968).

Almost surely, 2^20641701 is an apocalyptic number.

It is an amenable number.

20641701 is a deficient number, since it is larger than the sum of its proper divisors (7046043).

20641701 is a wasteful number, since it uses less digits than its factorization.

20641701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41371.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 20641701 is about 4543.3138786573. The cubic root of 20641701 is about 274.3143292706.

The spelling of 20641701 in words is "twenty million, six hundred forty-one thousand, seven hundred one".