2642658 has 8 divisors (see below), whose sum is σ = 5285328. Its totient is φ = 880884.

The previous prime is 2642639. The next prime is 2642693. The reversal of 2642658 is 8562462.

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

2642658 is an admirable number.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220216 + ... + 220227.

It is an arithmetic number, because the mean of its divisors is an integer number (660666).

2^2642658 is an apocalyptic number.

2642658 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2642658 is a wasteful number, since it uses less digits than its factorization.

2642658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440448.

The product of its digits is 23040, while the sum is 33.

The square root of 2642658 is about 1625.6254181084. The cubic root of 2642658 is about 138.2548326407.

The spelling of 2642658 in words is "two million, six hundred forty-two thousand, six hundred fifty-eight".