20641702 has 8 divisors (see below), whose sum is σ = 31001256. Its totient is φ = 10307952.

The previous prime is 20641679. The next prime is 20641717. The reversal of 20641702 is 20714602.

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

It is a super-2 number, since 2×20641702² = 852159722913608, which contains 22 as substring.

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, 4308 + ... + 7735.

It is an arithmetic number, because the mean of its divisors is an integer number (3875157).

Almost surely, 2^20641702 is an apocalyptic number.

20641702 is a deficient number, since it is larger than the sum of its proper divisors (10359554).

20641702 is a wasteful number, since it uses less digits than its factorization.

20641702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12902.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20641702 is about 4543.3139887091. The cubic root of 20641702 is about 274.3143337004.

Subtracting 20641702 from its reverse (20714602), we obtain a square (72900 = 270²).

The spelling of 20641702 in words is "twenty million, six hundred forty-one thousand, seven hundred two".