8345640264 has 128 divisors (see below), whose sum is σ = 22831872000. Its totient is φ = 2526660864.

The previous prime is 8345640253. The next prime is 8345640307. The reversal of 8345640264 is 4620465438.

It is a super-2 number, since 2×8345640264² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13482147 + ... + 13482765.

It is an arithmetic number, because the mean of its divisors is an integer number (178374000).

Almost surely, 2^8345640264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8345640264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11415936000).

8345640264 is an abundant number, since it is smaller than the sum of its proper divisors (14486231736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8345640264 is a wasteful number, since it uses less digits than its factorization.

8345640264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The square root of 8345640264 is about 91354.4758837792. The cubic root of 8345640264 is about 2028.3982174567.

The spelling of 8345640264 in words is "eight billion, three hundred forty-five million, six hundred forty thousand, two hundred sixty-four".