9677521 has 4 divisors (see below), whose sum is σ = 11060032. Its totient is φ = 8295012.

The previous prime is 9677519. The next prime is 9677557. The reversal of 9677521 is 1257769.

9677521 is digitally balanced in base 2, because in such base 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: 1257769 = 181 ⋅6949.

It is a cyclic number.

It is not a de Polignac number, because 9677521 - 2¹ = 9677519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9677501) 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, 691245 + ... + 691258.

It is an arithmetic number, because the mean of its divisors is an integer number (2765008).

Almost surely, 2^9677521 is an apocalyptic number.

It is an amenable number.

9677521 is a deficient number, since it is larger than the sum of its proper divisors (1382511).

9677521 is a wasteful number, since it uses less digits than its factorization.

9677521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382510.

The product of its digits is 26460, while the sum is 37.

The square root of 9677521 is about 3110.8714213223. The cubic root of 9677521 is about 213.1022527701.

The spelling of 9677521 in words is "nine million, six hundred seventy-seven thousand, five hundred twenty-one".