9640851 has 8 divisors (see below), whose sum is σ = 14023104. Its totient is φ = 5842920.

The previous prime is 9640849. The next prime is 9640871. The reversal of 9640851 is 1580469.

9640851 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9640851 - 2¹ = 9640849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 292147 = 9640851 / (9 + 6 + 4 + 0 + 8 + 5 + 1).

It is not an unprimeable number, because it can be changed into a prime (9640811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146041 + ... + 146106.

It is an arithmetic number, because the mean of its divisors is an integer number (1752888).

Almost surely, 2^9640851 is an apocalyptic number.

9640851 is a deficient number, since it is larger than the sum of its proper divisors (4382253).

9640851 is a wasteful number, since it uses less digits than its factorization.

9640851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292161.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 9640851 is about 3104.9719805499. The cubic root of 9640851 is about 212.8327501910.

The spelling of 9640851 in words is "nine million, six hundred forty thousand, eight hundred fifty-one".