2780063 has 8 divisors (see below), whose sum is σ = 3266256. Its totient is φ = 2332800.

The previous prime is 2780053. The next prime is 2780077. The reversal of 2780063 is 3600872.

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 2780063 - 2⁴ = 2780047 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 (2780053) 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, 9578 + ... + 9863.

It is an arithmetic number, because the mean of its divisors is an integer number (408282).

2^2780063 is an apocalyptic number.

2780063 is a deficient number, since it is larger than the sum of its proper divisors (486193).

2780063 is a wasteful number, since it uses less digits than its factorization.

2780063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19465.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2780063 is about 1667.3520923908. The cubic root of 2780063 is about 140.6106489388.

The spelling of 2780063 in words is "two million, seven hundred eighty thousand, sixty-three".