2746639 has 8 divisors (see below), whose sum is σ = 3323808. Its totient is φ = 2215680.

The previous prime is 2746609. The next prime is 2746643. The reversal of 2746639 is 9366472.

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

It is a cyclic number.

It is not a de Polignac number, because 2746639 - 2⁵ = 2746607 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2²¹ + 7⁶ + 4³ + 6² + 6³ + 3¹² + 9² .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2746598 and 2746607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2746609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11422 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (415476).

2^2746639 is an apocalyptic number.

2746639 is a deficient number, since it is larger than the sum of its proper divisors (577169).

2746639 is a wasteful number, since it uses less digits than its factorization.

2746639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23105.

The product of its digits is 54432, while the sum is 37.

The square root of 2746639 is about 1657.2987057257. The cubic root of 2746639 is about 140.0448665722.

The spelling of 2746639 in words is "two million, seven hundred forty-six thousand, six hundred thirty-nine".