20776075 has 6 divisors (see below), whose sum is σ = 25762364. Its totient is φ = 16620840.

The previous prime is 20776069. The next prime is 20776079. The reversal of 20776075 is 57067702.

It is not a de Polignac number, because 20776075 - 2⁵ = 20776043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20776075.

It is not an unprimeable number, because it can be changed into a prime (20776079) 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 5 ways as a sum of consecutive naturals, for example, 415497 + ... + 415546.

Almost surely, 2^20776075 is an apocalyptic number.

20776075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20776075 is a deficient number, since it is larger than the sum of its proper divisors (4986289).

20776075 is an equidigital number, since it uses as much as digits as its factorization.

20776075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831053 (or 831048 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 20776075 is about 4558.0779940672. The cubic root of 20776075 is about 274.9082889775.

The spelling of 20776075 in words is "twenty million, seven hundred seventy-six thousand, seventy-five".