2664278 has 8 divisors (see below), whose sum is σ = 4027320. Its totient is φ = 1321840.

The previous prime is 2664271. The next prime is 2664293. The reversal of 2664278 is 8724662.

2664278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2664278² = 14196754522568, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4823 + ... + 5346.

It is an arithmetic number, because the mean of its divisors is an integer number (503415).

2^2664278 is an apocalyptic number.

2664278 is a deficient number, since it is larger than the sum of its proper divisors (1363042).

2664278 is a wasteful number, since it uses less digits than its factorization.

2664278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10302.

The product of its digits is 32256, while the sum is 35.

The square root of 2664278 is about 1632.2616211870. The cubic root of 2664278 is about 138.6308372770.

The spelling of 2664278 in words is "two million, six hundred sixty-four thousand, two hundred seventy-eight".