9910645 has 4 divisors (see below), whose sum is σ = 11892780. Its totient is φ = 7928512.

The previous prime is 9910627. The next prime is 9910657. The reversal of 9910645 is 5460199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5460199 = 619 ⋅8821.

It can be written as a sum of positive squares in 2 ways, for example, as 2193361 + 7717284 = 1481^2 + 2778^2 .

It is a cyclic number.

It is not a de Polignac number, because 9910645 - 2¹⁹ = 9386357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9910645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991060 + ... + 991069.

It is an arithmetic number, because the mean of its divisors is an integer number (2973195).

Almost surely, 2^9910645 is an apocalyptic number.

It is an amenable number.

9910645 is a deficient number, since it is larger than the sum of its proper divisors (1982135).

9910645 is a wasteful number, since it uses less digits than its factorization.

9910645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982134.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 9910645 is about 3148.1176915738. The cubic root of 9910645 is about 214.7998497873.

The spelling of 9910645 in words is "nine million, nine hundred ten thousand, six hundred forty-five".