9690521 has 8 divisors (see below), whose sum is σ = 10279104. Its totient is φ = 9115920.

The previous prime is 9690517. The next prime is 9690529. The reversal of 9690521 is 1250969.

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 9690521 - 2² = 9690517 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9690529) 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, 2051 + ... + 4856.

It is an arithmetic number, because the mean of its divisors is an integer number (1284888).

Almost surely, 2^9690521 is an apocalyptic number.

It is an amenable number.

9690521 is a deficient number, since it is larger than the sum of its proper divisors (588583).

9690521 is a wasteful number, since it uses less digits than its factorization.

9690521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6991.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 9690521 is about 3112.9601667866. The cubic root of 9690521 is about 213.1976315258.

The spelling of 9690521 in words is "nine million, six hundred ninety thousand, five hundred twenty-one".