2678081 has 4 divisors (see below), whose sum is σ = 3060672. Its totient is φ = 2295492.

The previous prime is 2678047. The next prime is 2678101. The reversal of 2678081 is 1808762.

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.

It is a cyclic number.

It is not a de Polignac number, because 2678081 - 2⁶ = 2678017 is a prime.

It is a super-2 number, since 2×2678081² = 14344235685122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2678041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191285 + ... + 191298.

It is an arithmetic number, because the mean of its divisors is an integer number (765168).

2^2678081 is an apocalyptic number.

It is an amenable number.

2678081 is a deficient number, since it is larger than the sum of its proper divisors (382591).

2678081 is an equidigital number, since it uses as much as digits as its factorization.

2678081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382590.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 2678081 is about 1636.4843415077. The cubic root of 2678081 is about 138.8698296573.

The spelling of 2678081 in words is "two million, six hundred seventy-eight thousand, eighty-one".