6945591408 has 80 divisors (see below), whose sum is σ = 21213166080. Its totient is φ = 1916022528.

The previous prime is 6945591391. The next prime is 6945591421. The reversal of 6945591408 is 8041955496.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346660 + ... + 366147.

It is an arithmetic number, because the mean of its divisors is an integer number (265164576).

Almost surely, 2^6945591408 is an apocalyptic number.

It is an amenable number.

6945591408 is an abundant number, since it is smaller than the sum of its proper divisors (14267574672).

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

6945591408 is a wasteful number, since it uses less digits than its factorization.

6945591408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712854 (or 712848 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 51.

The square root of 6945591408 is about 83340.2148305366. The cubic root of 6945591408 is about 1907.9621007815.

The spelling of 6945591408 in words is "six billion, nine hundred forty-five million, five hundred ninety-one thousand, four hundred eight".