2780567 has 8 divisors (see below), whose sum is σ = 2885376. Its totient is φ = 2677752.

The previous prime is 2780527. The next prime is 2780597. The reversal of 2780567 is 7650872.

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 2780567 - 2¹² = 2776471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2708 + ... + 3590.

It is an arithmetic number, because the mean of its divisors is an integer number (360672).

2^2780567 is an apocalyptic number.

2780567 is a deficient number, since it is larger than the sum of its proper divisors (104809).

2780567 is an equidigital number, since it uses as much as digits as its factorization.

2780567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997.

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

The square root of 2780567 is about 1667.5032233852. The cubic root of 2780567 is about 140.6191455670.

It can be divided in two parts, 27805 and 67, that added together give a palindrome (27872).

The spelling of 2780567 in words is "two million, seven hundred eighty thousand, five hundred sixty-seven".