9964724865 has 8 divisors (see below), whose sum is σ = 15943559808. Its totient is φ = 5314519920.

The previous prime is 9964724851. The next prime is 9964724899. The reversal of 9964724865 is 5684274699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9964724865 - 2⁶ = 9964724801 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9964724799 and 9964724808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332157481 + ... + 332157510.

It is an arithmetic number, because the mean of its divisors is an integer number (1992944976).

Almost surely, 2^9964724865 is an apocalyptic number.

It is an amenable number.

9964724865 is a deficient number, since it is larger than the sum of its proper divisors (5978834943).

9964724865 is a wasteful number, since it uses less digits than its factorization.

9964724865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664314999.

The product of its digits is 26127360, while the sum is 60.

The square root of 9964724865 is about 99823.4685081619. The cubic root of 9964724865 is about 2151.8984396529.

The spelling of 9964724865 in words is "nine billion, nine hundred sixty-four million, seven hundred twenty-four thousand, eight hundred sixty-five".