7855697340 has 72 divisors (see below), whose sum is σ = 23842859040. Its totient is φ = 2093629824.

The previous prime is 7855697327. The next prime is 7855697341. The reversal of 7855697340 is 437965587.

7855697340 is a `hidden beast` number, since 7 + 8 + 5 + 569 + 73 + 4 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7855697341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 320646 + ... + 344274.

It is an arithmetic number, because the mean of its divisors is an integer number (331150820).

Almost surely, 2^7855697340 is an apocalyptic number.

It is an amenable number.

7855697340 is an abundant number, since it is smaller than the sum of its proper divisors (15987161700).

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

7855697340 is a wasteful number, since it uses less digits than its factorization.

7855697340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25491 (or 25486 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The square root of 7855697340 is about 88632.3718513727. The cubic root of 7855697340 is about 1987.9017419761.

The spelling of 7855697340 in words is "seven billion, eight hundred fifty-five million, six hundred ninety-seven thousand, three hundred forty".