9645672687 has 48 divisors (see below), whose sum is σ = 16387025760. Its totient is φ = 5008668672.

The previous prime is 9645672557. The next prime is 9645672703. The reversal of 9645672687 is 7862765469.

It is not a de Polignac number, because 9645672687 - 2¹⁰ = 9645671663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9645672687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9645672287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5923 + ... + 139019.

It is an arithmetic number, because the mean of its divisors is an integer number (341396370).

Almost surely, 2^9645672687 is an apocalyptic number.

9645672687 is a deficient number, since it is larger than the sum of its proper divisors (6741353073).

9645672687 is a wasteful number, since it uses less digits than its factorization.

9645672687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133160 (or 133153 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 60.

The square root of 9645672687 is about 98212.3856089445. The cubic root of 9645672687 is about 2128.6822568561.

The spelling of 9645672687 in words is "nine billion, six hundred forty-five million, six hundred seventy-two thousand, six hundred eighty-seven".