6697779201 has 24 divisors (see below), whose sum is σ = 9910060160. Its totient is φ = 4356719136.

The previous prime is 6697779161. The next prime is 6697779203. The reversal of 6697779201 is 1029777966.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-6697779201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6697779203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 377160 + ... + 394518.

It is a Proth number, since it is equal to 12775 ⋅ 2¹⁹ + 1 and 12775 < 2¹⁹.

Almost surely, 2^6697779201 is an apocalyptic number.

It is an amenable number.

6697779201 is a deficient number, since it is larger than the sum of its proper divisors (3212280959).

6697779201 is a wasteful number, since it uses less digits than its factorization.

6697779201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18405 (or 18402 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 54.

The square root of 6697779201 is about 81839.9609054159. The cubic root of 6697779201 is about 1884.9953165435.

The spelling of 6697779201 in words is "six billion, six hundred ninety-seven million, seven hundred seventy-nine thousand, two hundred one".