6697035221 has 12 divisors (see below), whose sum is σ = 6942019812. Its totient is φ = 6460427904.

The previous prime is 6697035209. The next prime is 6697035239. The reversal of 6697035221 is 1225307966.

It can be written as a sum of positive squares in 6 ways, for example, as 1405200196 + 5291835025 = 37486^2 + 72745^2 .

It is not a de Polignac number, because 6697035221 - 2¹⁴ = 6697018837 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 (6697035251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1202375 + ... + 1207931.

It is an arithmetic number, because the mean of its divisors is an integer number (578501651).

Almost surely, 2^6697035221 is an apocalyptic number.

It is an amenable number.

6697035221 is a deficient number, since it is larger than the sum of its proper divisors (244984591).

6697035221 is a wasteful number, since it uses less digits than its factorization.

6697035221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7048 (or 7019 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 6697035221 is about 81835.4154446594. The cubic root of 6697035221 is about 1884.9255197396.

The spelling of 6697035221 in words is "six billion, six hundred ninety-seven million, thirty-five thousand, two hundred twenty-one".