20760785 has 4 divisors (see below), whose sum is σ = 24912948. Its totient is φ = 16608624.

The previous prime is 20760769. The next prime is 20760797. The reversal of 20760785 is 58706702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58706702 = 2 ⋅29353351.

It can be written as a sum of positive squares in 2 ways, for example, as 6713281 + 14047504 = 2591^2 + 3748^2 .

It is a cyclic number.

It is not a de Polignac number, because 20760785 - 2⁴ = 20760769 is a prime.

It is a Duffinian 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, 2076074 + ... + 2076083.

It is an arithmetic number, because the mean of its divisors is an integer number (6228237).

Almost surely, 2^20760785 is an apocalyptic number.

It is an amenable number.

20760785 is a deficient number, since it is larger than the sum of its proper divisors (4152163).

20760785 is an equidigital number, since it uses as much as digits as its factorization.

20760785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152162.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 20760785 is about 4556.4004433324. The cubic root of 20760785 is about 274.8408335141.

The spelling of 20760785 in words is "twenty million, seven hundred sixty thousand, seven hundred eighty-five".