7140655687 has 8 divisors (see below), whose sum is σ = 7791189120. Its totient is φ = 6490352760.

The previous prime is 7140655607. The next prime is 7140655729. The reversal of 7140655687 is 7865560417.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 7140655687 - 2²⁷ = 7006437959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7140655687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7140655607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10678 + ... + 119980.

It is an arithmetic number, because the mean of its divisors is an integer number (973898640).

Almost surely, 2^7140655687 is an apocalyptic number.

7140655687 is a deficient number, since it is larger than the sum of its proper divisors (650533433).

7140655687 is a wasteful number, since it uses less digits than its factorization.

7140655687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115253.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The square root of 7140655687 is about 84502.4004806964. The cubic root of 7140655687 is about 1925.6589130851.

The spelling of 7140655687 in words is "seven billion, one hundred forty million, six hundred fifty-five thousand, six hundred eighty-seven".