9715649 has 4 divisors (see below), whose sum is σ = 9727536. Its totient is φ = 9703764.

The previous prime is 9715639. The next prime is 9715663. The reversal of 9715649 is 9465179.

9715649 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9465179 = 1759 ⋅5381.

It is a cyclic number.

It is not a de Polignac number, because 9715649 - 2⁸ = 9715393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9715639) 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, 4619 + ... + 6384.

It is an arithmetic number, because the mean of its divisors is an integer number (2431884).

Almost surely, 2^9715649 is an apocalyptic number.

It is an amenable number.

9715649 is a deficient number, since it is larger than the sum of its proper divisors (11887).

9715649 is a wasteful number, since it uses less digits than its factorization.

9715649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11886.

The product of its digits is 68040, while the sum is 41.

The square root of 9715649 is about 3116.9935835673. The cubic root of 9715649 is about 213.3817498074.

The spelling of 9715649 in words is "nine million, seven hundred fifteen thousand, six hundred forty-nine".