2074781 has 4 divisors (see below), whose sum is σ = 2184000. Its totient is φ = 1965564.

The previous prime is 2074753. The next prime is 2074801. The reversal of 2074781 is 1874702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1874702 = 2 ⋅937351.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2074781 is a prime.

It is a super-2 number, since 2×2074781² = 8609432395922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2074081) 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 3 ways as a sum of consecutive naturals, for example, 54581 + ... + 54618.

It is an arithmetic number, because the mean of its divisors is an integer number (546000).

2^2074781 is an apocalyptic number.

It is an amenable number.

2074781 is a deficient number, since it is larger than the sum of its proper divisors (109219).

2074781 is a wasteful number, since it uses less digits than its factorization.

2074781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109218.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 2074781 is about 1440.4100110732. The cubic root of 2074781 is about 127.5432328078.

The spelling of 2074781 in words is "two million, seventy-four thousand, seven hundred eighty-one".