9948661 has 4 divisors (see below), whose sum is σ = 9960300. Its totient is φ = 9937024.

The previous prime is 9948643. The next prime is 9948677. The reversal of 9948661 is 1668499.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4704561 + 5244100 = 2169^2 + 2290^2 .

It is a cyclic number.

It is not a de Polignac number, because 9948661 - 2²¹ = 7851509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9948061) 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, 4426 + ... + 6283.

It is an arithmetic number, because the mean of its divisors is an integer number (2490075).

Almost surely, 2^9948661 is an apocalyptic number.

It is an amenable number.

9948661 is a deficient number, since it is larger than the sum of its proper divisors (11639).

9948661 is a wasteful number, since it uses less digits than its factorization.

9948661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11638.

The product of its digits is 93312, while the sum is 43.

The square root of 9948661 is about 3154.1498062077. The cubic root of 9948661 is about 215.0741478525.

It can be divided in two parts, 9948 and 661, that added together give a square (10609 = 103²).

The spelling of 9948661 in words is "nine million, nine hundred forty-eight thousand, six hundred sixty-one".