20701861 has 8 divisors (see below), whose sum is σ = 21371040. Its totient is φ = 20043408.

The previous prime is 20701847. The next prime is 20701897. The reversal of 20701861 is 16810702.

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 20701861 - 2⁹ = 20701349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20701841) 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, 1335 + ... + 6571.

It is an arithmetic number, because the mean of its divisors is an integer number (2671380).

Almost surely, 2^20701861 is an apocalyptic number.

It is an amenable number.

20701861 is a deficient number, since it is larger than the sum of its proper divisors (669179).

20701861 is an equidigital number, since it uses as much as digits as its factorization.

20701861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 20701861 is about 4549.9297796779. The cubic root of 20701861 is about 274.5805661084.

The spelling of 20701861 in words is "twenty million, seven hundred one thousand, eight hundred sixty-one".