3742647 has 4 divisors (see below), whose sum is σ = 4990200. Its totient is φ = 2495096.

The previous prime is 3742633. The next prime is 3742649. The reversal of 3742647 is 7462473.

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

It is a cyclic number.

It is not a de Polignac number, because 3742647 - 2⁴ = 3742631 is a prime.

It is a D-number.

3742647 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3742649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623772 + ... + 623777.

It is an arithmetic number, because the mean of its divisors is an integer number (1247550).

Almost surely, 2^3742647 is an apocalyptic number.

3742647 is a deficient number, since it is larger than the sum of its proper divisors (1247553).

3742647 is a wasteful number, since it uses less digits than its factorization.

3742647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247552.

The product of its digits is 28224, while the sum is 33.

The square root of 3742647 is about 1934.5922050913. The cubic root of 3742647 is about 155.2600144976.

It can be divided in two parts, 37426 and 47, that added together give a palindrome (37473).

The spelling of 3742647 in words is "three million, seven hundred forty-two thousand, six hundred forty-seven".