9967790 has 32 divisors (see below), whose sum is σ = 20680704. Its totient is φ = 3388320.

The previous prime is 9967781. The next prime is 9967801. The reversal of 9967790 is 977699.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8627 + ... + 9713.

It is an arithmetic number, because the mean of its divisors is an integer number (646272).

Almost surely, 2^9967790 is an apocalyptic number.

9967790 is an abundant number, since it is smaller than the sum of its proper divisors (10712914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9967790 is a wasteful number, since it uses less digits than its factorization.

9967790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 9967790 is about 3157.1807043627. The cubic root of 9967790 is about 215.2119057320.

The spelling of 9967790 in words is "nine million, nine hundred sixty-seven thousand, seven hundred ninety".