20580761 has 8 divisors (see below), whose sum is σ = 21832704. Its totient is φ = 19333440.

The previous prime is 20580751. The next prime is 20580767. The reversal of 20580761 is 16708502.

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 20580761 - 2⁶ = 20580697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20580767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13256 + ... + 14726.

It is an arithmetic number, because the mean of its divisors is an integer number (2729088).

Almost surely, 2^20580761 is an apocalyptic number.

It is an amenable number.

20580761 is a deficient number, since it is larger than the sum of its proper divisors (1251943).

20580761 is a wasteful number, since it uses less digits than its factorization.

20580761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 20580761 is about 4536.6023630025. The cubic root of 20580761 is about 274.0441126341.

The spelling of 20580761 in words is "twenty million, five hundred eighty thousand, seven hundred sixty-one".