2578662 has 48 divisors (see below), whose sum is σ = 6184080. Its totient is φ = 793728.

The previous prime is 2578657. The next prime is 2578717. The reversal of 2578662 is 2668752.

It is a d-powerful number, because it can be written as 2⁴ + 5⁹ + 7² + 8² + 6⁷ + 6⁷ + 2¹⁶ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48628 + ... + 48680.

It is an arithmetic number, because the mean of its divisors is an integer number (128835).

2^2578662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2578662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3092040).

2578662 is an abundant number, since it is smaller than the sum of its proper divisors (3605418).

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

2578662 is a wasteful number, since it uses less digits than its factorization.

2578662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 75 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 2578662 is about 1605.8212851996. The cubic root of 2578662 is about 137.1296834444.

It can be divided in two parts, 2578 and 662, that added together give a triangular number (3240 = T₈₀).

The spelling of 2578662 in words is "two million, five hundred seventy-eight thousand, six hundred sixty-two".