2778633 has 48 divisors (see below), whose sum is σ = 5031936. Its totient is φ = 1451520.

The previous prime is 2778619. The next prime is 2778647. The reversal of 2778633 is 3368772.

It is an interprime number because it is at equal distance from previous prime (2778619) and next prime (2778647).

It is not a de Polignac number, because 2778633 - 2⁹ = 2778121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2778673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21816 + ... + 21942.

It is an arithmetic number, because the mean of its divisors is an integer number (104832).

2^2778633 is an apocalyptic number.

It is an amenable number.

2778633 is a deficient number, since it is larger than the sum of its proper divisors (2253303).

2778633 is a wasteful number, since it uses less digits than its factorization.

2778633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 171 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 2778633 is about 1666.9232135884. The cubic root of 2778633 is about 140.5865358505.

The spelling of 2778633 in words is "two million, seven hundred seventy-eight thousand, six hundred thirty-three".