6989668514 has 8 divisors (see below), whose sum is σ = 10682323740. Its totient is φ = 3428893936.

The previous prime is 6989668429. The next prime is 6989668519. The reversal of 6989668514 is 4158669896.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6983443489 + 6225025 = 83567^2 + 2495^2 .

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

It is not an unprimeable number, because it can be changed into a prime (6989668519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32970029 + ... + 32970240.

Almost surely, 2^6989668514 is an apocalyptic number.

6989668514 is a deficient number, since it is larger than the sum of its proper divisors (3692655226).

6989668514 is a wasteful number, since it uses less digits than its factorization.

6989668514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65940324.

The product of its digits is 22394880, while the sum is 62.

The square root of 6989668514 is about 83604.2374165329. The cubic root of 6989668514 is about 1911.9896040660.

The spelling of 6989668514 in words is "six billion, nine hundred eighty-nine million, six hundred sixty-eight thousand, five hundred fourteen".