6697777904 has 20 divisors (see below), whose sum is σ = 13221794376. Its totient is φ = 3285701952.

The previous prime is 6697777897. The next prime is 6697777907. The reversal of 6697777904 is 4097777966.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6697777907) 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, 3948314 + ... + 3950009.

Almost surely, 2^6697777904 is an apocalyptic number.

It is an amenable number.

6697777904 is a deficient number, since it is larger than the sum of its proper divisors (6524016472).

6697777904 is a wasteful number, since it uses less digits than its factorization.

6697777904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7898384 (or 7898378 counting only the distinct ones).

The product of its (nonzero) digits is 28005264, while the sum is 62.

The square root of 6697777904 is about 81839.9529814137. The cubic root of 6697777904 is about 1884.9951948694.

Adding to 6697777904 its sum of digits (62), we get a palindrome (6697777966).

The spelling of 6697777904 in words is "six billion, six hundred ninety-seven million, seven hundred seventy-seven thousand, nine hundred four".