2647742 has 4 divisors (see below), whose sum is σ = 3971616. Its totient is φ = 1323870.

The previous prime is 2647717. The next prime is 2647751. The reversal of 2647742 is 2477462.

It is a semiprime because it is the product of two primes.

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁴ + 4⁶ + 7 + 7⁵ + 4⁶ + 2²¹ .

It is a junction number, because it is equal to n+sod(n) for n = 2647699 and 2647708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661934 + ... + 661937.

It is an arithmetic number, because the mean of its divisors is an integer number (992904).

2^2647742 is an apocalyptic number.

2647742 is a deficient number, since it is larger than the sum of its proper divisors (1323874).

2647742 is a wasteful number, since it uses less digits than its factorization.

2647742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323873.

The product of its digits is 18816, while the sum is 32.

The square root of 2647742 is about 1627.1883726232. The cubic root of 2647742 is about 138.3434350134.

The spelling of 2647742 in words is "two million, six hundred forty-seven thousand, seven hundred forty-two".