20700541 has 4 divisors (see below), whose sum is σ = 20894112. Its totient is φ = 20506972.

The previous prime is 20700523. The next prime is 20700551. The reversal of 20700541 is 14500702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20700541 - 2⁷ = 20700413 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 (20700551) 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, 96625 + ... + 96838.

It is an arithmetic number, because the mean of its divisors is an integer number (5223528).

Almost surely, 2^20700541 is an apocalyptic number.

It is an amenable number.

20700541 is a deficient number, since it is larger than the sum of its proper divisors (193571).

20700541 is a wasteful number, since it uses less digits than its factorization.

20700541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193570.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20700541 is about 4549.7847201818. The cubic root of 20700541 is about 274.5747300139.

It can be divided in two parts, 207005 and 41, that added together give a triangular number (207046 = T₆₄₃).

The spelling of 20700541 in words is "twenty million, seven hundred thousand, five hundred forty-one".