9961724 has 12 divisors (see below), whose sum is σ = 17838744. Its totient is φ = 4864944.

The previous prime is 9961723. The next prime is 9961733. The reversal of 9961724 is 4271699.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 9² + 9³ + 6⁴ + 1 + 7⁸ + 2⁹ + 4¹¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9961723) 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, 28787 + ... + 29130.

It is an arithmetic number, because the mean of its divisors is an integer number (1486562).

Almost surely, 2^9961724 is an apocalyptic number.

It is an amenable number.

9961724 is a deficient number, since it is larger than the sum of its proper divisors (7877020).

9961724 is a wasteful number, since it uses less digits than its factorization.

9961724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57964 (or 57962 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 9961724 is about 3156.2198909455. The cubic root of 9961724 is about 215.1682404083.

The spelling of 9961724 in words is "nine million, nine hundred sixty-one thousand, seven hundred twenty-four".