7974647 has 4 divisors (see below), whose sum is σ = 8190216. Its totient is φ = 7759080.

The previous prime is 7974643. The next prime is 7974653. The reversal of 7974647 is 7464797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7464797 = 1013 ⋅7369.

It is a cyclic number.

It is not a de Polignac number, because 7974647 - 2² = 7974643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7974598 and 7974607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7974641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107729 + ... + 107802.

It is an arithmetic number, because the mean of its divisors is an integer number (2047554).

Almost surely, 2^7974647 is an apocalyptic number.

7974647 is a deficient number, since it is larger than the sum of its proper divisors (215569).

7974647 is a wasteful number, since it uses less digits than its factorization.

7974647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215568.

The product of its digits is 296352, while the sum is 44.

The square root of 7974647 is about 2823.9417486910. The cubic root of 7974647 is about 199.7885014206.

The spelling of 7974647 in words is "seven million, nine hundred seventy-four thousand, six hundred forty-seven".