2667864 has 32 divisors (see below), whose sum is σ = 6750000. Its totient is φ = 878592.

The previous prime is 2667859. The next prime is 2667871. The reversal of 2667864 is 4687662.

2667864 = T₁₉₉ + T₂₀₀ + ... + T₂₈₇.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1512 + ... + 2760.

2^2667864 is an apocalyptic number.

2667864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2667864 is an abundant number, since it is smaller than the sum of its proper divisors (4082136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2667864 is a wasteful number, since it uses less digits than its factorization.

2667864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1343 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 2667864 is about 1633.3597276779. The cubic root of 2667864 is about 138.6930063788.

The spelling of 2667864 in words is "two million, six hundred sixty-seven thousand, eight hundred sixty-four".