9651965 has 8 divisors (see below), whose sum is σ = 11607648. Its totient is φ = 7704720.

The previous prime is 9651959. The next prime is 9651977. The reversal of 9651965 is 5691569.

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

It is not a de Polignac number, because 9651965 - 2¹⁰ = 9650941 is a prime.

It is a super-2 number, since 2×9651965² = 186320856722450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 770 + ... + 4460.

It is an arithmetic number, because the mean of its divisors is an integer number (1450956).

Almost surely, 2^9651965 is an apocalyptic number.

It is an amenable number.

9651965 is a deficient number, since it is larger than the sum of its proper divisors (1955683).

9651965 is a wasteful number, since it uses less digits than its factorization.

9651965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219.

The product of its digits is 72900, while the sum is 41.

The square root of 9651965 is about 3106.7611752434. The cubic root of 9651965 is about 212.9145035138.

It can be divided in two parts, 9 and 651965, that multiplied together give a palindrome (5867685).

The spelling of 9651965 in words is "nine million, six hundred fifty-one thousand, nine hundred sixty-five".