2658906 has 24 divisors (see below), whose sum is σ = 5975424. Its totient is φ = 886140.

The previous prime is 2658899. The next prime is 2658913. The reversal of 2658906 is 6098562.

It is an interprime number because it is at equal distance from previous prime (2658899) and next prime (2658913).

It is a super-2 number, since 2×2658906² = 14139562233672, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2250 + ... + 3221.

It is an arithmetic number, because the mean of its divisors is an integer number (248976).

2^2658906 is an apocalyptic number.

2658906 is an abundant number, since it is smaller than the sum of its proper divisors (3316518).

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

2658906 is an equidigital number, since it uses as much as digits as its factorization.

2658906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488 (or 5476 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2658906 is about 1630.6152213199. The cubic root of 2658906 is about 138.5376005163.

The spelling of 2658906 in words is "two million, six hundred fifty-eight thousand, nine hundred six".