6930781996 has 6 divisors (see below), whose sum is σ = 12128868500. Its totient is φ = 3465390996.

The previous prime is 6930781993. The next prime is 6930782029. The reversal of 6930781996 is 6991870396.

It is a self number, because there is not a number n which added to its sum of digits gives 6930781996.

It is not an unprimeable number, because it can be changed into a prime (6930781993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 866347746 + ... + 866347753.

Almost surely, 2^6930781996 is an apocalyptic number.

It is an amenable number.

6930781996 is a deficient number, since it is larger than the sum of its proper divisors (5198086504).

6930781996 is a wasteful number, since it uses less digits than its factorization.

6930781996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732695503 (or 1732695501 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 58.

The square root of 6930781996 is about 83251.3182838566. The cubic root of 6930781996 is about 1906.6050815656.

The spelling of 6930781996 in words is "six billion, nine hundred thirty million, seven hundred eighty-one thousand, nine hundred ninety-six".