9902765 has 8 divisors (see below), whose sum is σ = 12400128. Its totient is φ = 7577680.

The previous prime is 9902749. The next prime is 9902797. The reversal of 9902765 is 5672099.

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

It is not a de Polignac number, because 9902765 - 2⁴ = 9902749 is a prime.

It is a super-3 number, since 3×9902765³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42941 + ... + 43170.

It is an arithmetic number, because the mean of its divisors is an integer number (1550016).

Almost surely, 2^9902765 is an apocalyptic number.

It is an amenable number.

9902765 is a deficient number, since it is larger than the sum of its proper divisors (2497363).

9902765 is a wasteful number, since it uses less digits than its factorization.

9902765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86139.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 9902765 is about 3146.8659011785. The cubic root of 9902765 is about 214.7429052386.

The spelling of 9902765 in words is "nine million, nine hundred two thousand, seven hundred sixty-five".