20774913 has 8 divisors (see below), whose sum is σ = 27739776. Its totient is φ = 13830000.

The previous prime is 20774909. The next prime is 20774917. The reversal of 20774913 is 31947702.

It is an interprime number because it is at equal distance from previous prime (20774909) and next prime (20774917).

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

It is not a de Polignac number, because 20774913 - 2² = 20774909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20774917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2358 + ... + 6863.

It is an arithmetic number, because the mean of its divisors is an integer number (3467472).

It is a Proth number, since it is equal to 317 ⋅ 2¹⁶ + 1 and 317 < 2¹⁶.

Almost surely, 2^20774913 is an apocalyptic number.

It is an amenable number.

20774913 is a deficient number, since it is larger than the sum of its proper divisors (6964863).

20774913 is an equidigital number, since it uses as much as digits as its factorization.

20774913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9975.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 20774913 is about 4557.9505262782. The cubic root of 20774913 is about 274.9031637010.

The spelling of 20774913 in words is "twenty million, seven hundred seventy-four thousand, nine hundred thirteen".