9659745 has 24 divisors (see below), whose sum is σ = 16923816. Its totient is φ = 5096448.

The previous prime is 9659737. The next prime is 9659753. The reversal of 9659745 is 5479569.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9659737) and next prime (9659753).

It can be written as a sum of positive squares in 4 ways, for example, as 3504384 + 6155361 = 1872^2 + 2481^2 .

It is not a de Polignac number, because 9659745 - 2³ = 9659737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 9659745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3259 + ... + 5471.

It is an arithmetic number, because the mean of its divisors is an integer number (705159).

Almost surely, 2^9659745 is an apocalyptic number.

It is an amenable number.

9659745 is a deficient number, since it is larger than the sum of its proper divisors (7264071).

9659745 is a wasteful number, since it uses less digits than its factorization.

9659745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321 (or 2318 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 9659745 is about 3108.0130308607. The cubic root of 9659745 is about 212.9716949758.

It can be divided in two parts, 9659 and 745, that added together give a square (10404 = 102²).

The spelling of 9659745 in words is "nine million, six hundred fifty-nine thousand, seven hundred forty-five".