9956567 has 4 divisors (see below), whose sum is σ = 10006800. Its totient is φ = 9906336.

The previous prime is 9956561. The next prime is 9956579. The reversal of 9956567 is 7656599.

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 9956567 - 2⁶ = 9956503 is a prime.

It is a Duffinian number.

9956567 is a modest number, since divided by 6567 gives 995 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9956561) 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, 24818 + ... + 25215.

It is an arithmetic number, because the mean of its divisors is an integer number (2501700).

Almost surely, 2^9956567 is an apocalyptic number.

9956567 is a deficient number, since it is larger than the sum of its proper divisors (50233).

9956567 is a wasteful number, since it uses less digits than its factorization.

9956567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50232.

The product of its digits is 510300, while the sum is 47.

The square root of 9956567 is about 3155.4028268987. The cubic root of 9956567 is about 215.1311044618.

Subtracting from 9956567 its reverse (7656599), we obtain a cube (2299968 = 132³).

The spelling of 9956567 in words is "nine million, nine hundred fifty-six thousand, five hundred sixty-seven".