6976869157 has 4 divisors (see below), whose sum is σ = 6978156876. Its totient is φ = 6975581440.

The previous prime is 6976869143. The next prime is 6976869161. The reversal of 6976869157 is 7519686796.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3764926881 + 3211942276 = 61359^2 + 56674^2 .

It is a cyclic number.

It is not a de Polignac number, because 6976869157 - 2²³ = 6968480549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6976869257) 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 3 ways as a sum of consecutive naturals, for example, 635698 + ... + 646579.

It is an arithmetic number, because the mean of its divisors is an integer number (1744539219).

Almost surely, 2^6976869157 is an apocalyptic number.

It is an amenable number.

6976869157 is a deficient number, since it is larger than the sum of its proper divisors (1287719).

6976869157 is a wasteful number, since it uses less digits than its factorization.

6976869157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287718.

The product of its digits is 34292160, while the sum is 64.

The square root of 6976869157 is about 83527.6550431053. The cubic root of 6976869157 is about 1910.8218238202.

The spelling of 6976869157 in words is "six billion, nine hundred seventy-six million, eight hundred sixty-nine thousand, one hundred fifty-seven".