9772647 has 4 divisors (see below), whose sum is σ = 13030200. Its totient is φ = 6515096.

The previous prime is 9772643. The next prime is 9772661. The reversal of 9772647 is 7462779.

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 9772647 - 2² = 9772643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9772599 and 9772608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9772643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628772 + ... + 1628777.

It is an arithmetic number, because the mean of its divisors is an integer number (3257550).

Almost surely, 2^9772647 is an apocalyptic number.

9772647 is a deficient number, since it is larger than the sum of its proper divisors (3257553).

9772647 is a wasteful number, since it uses less digits than its factorization.

9772647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257552.

The product of its digits is 148176, while the sum is 42.

The square root of 9772647 is about 3126.1233181050. The cubic root of 9772647 is about 213.7982128514.

The spelling of 9772647 in words is "nine million, seven hundred seventy-two thousand, six hundred forty-seven".