20914761 has 8 divisors (see below), whose sum is σ = 31870144. Its totient is φ = 11951280.

The previous prime is 20914759. The next prime is 20914769. The reversal of 20914761 is 16741902.

It is a happy number.

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

It is not a de Polignac number, because 20914761 - 2¹ = 20914759 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20914769) 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, 497950 + ... + 497991.

It is an arithmetic number, because the mean of its divisors is an integer number (3983768).

Almost surely, 2^20914761 is an apocalyptic number.

20914761 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20914761 is a deficient number, since it is larger than the sum of its proper divisors (10955383).

20914761 is an equidigital number, since it uses as much as digits as its factorization.

20914761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995951.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 20914761 is about 4573.2659008634. The cubic root of 20914761 is about 275.5186290039.

The spelling of 20914761 in words is "twenty million, nine hundred fourteen thousand, seven hundred sixty-one".