2640570969 has 8 divisors (see below), whose sum is σ = 3573310240. Its totient is φ = 1734106176.

The previous prime is 2640570949. The next prime is 2640570983. The reversal of 2640570969 is 9690750462.

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

It is not a de Polignac number, because 2640570969 - 2⁵ = 2640570937 is a prime.

It is a super-3 number, since 3×2640570969³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640570949) 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, 6568384 + ... + 6568785.

It is an arithmetic number, because the mean of its divisors is an integer number (446663780).

Almost surely, 2^2640570969 is an apocalyptic number.

It is an amenable number.

2640570969 is a deficient number, since it is larger than the sum of its proper divisors (932739271).

2640570969 is a wasteful number, since it uses less digits than its factorization.

2640570969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13137239.

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 2640570969 is about 51386.4862488184. The cubic root of 2640570969 is about 1382.1842761292.

The spelling of 2640570969 in words is "two billion, six hundred forty million, five hundred seventy thousand, nine hundred sixty-nine".