7647997 has 8 divisors (see below), whose sum is σ = 8884352. Its totient is φ = 6447600.

The previous prime is 7647989. The next prime is 7648001. The reversal of 7647997 is 7997467.

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 7647997 - 2³ = 7647989 is a prime.

It is a super-2 number, since 2×7647997² = 116983716224018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7647997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7644997) 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, 8529 + ... + 9382.

It is an arithmetic number, because the mean of its divisors is an integer number (1110544).

Almost surely, 2^7647997 is an apocalyptic number.

It is an amenable number.

7647997 is a deficient number, since it is larger than the sum of its proper divisors (1236355).

7647997 is a wasteful number, since it uses less digits than its factorization.

7647997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17979.

The product of its digits is 666792, while the sum is 49.

The square root of 7647997 is about 2765.5012203939. The cubic root of 7647997 is about 197.0225351496.

The spelling of 7647997 in words is "seven million, six hundred forty-seven thousand, nine hundred ninety-seven".