6769457221 has 4 divisors (see below), whose sum is σ = 7063781472. Its totient is φ = 6475132972.

The previous prime is 6769457183. The next prime is 6769457257. The reversal of 6769457221 is 1227549676.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6769457221 - 2¹⁷ = 6769326149 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 (6769457521) 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, 147162091 + ... + 147162136.

It is an arithmetic number, because the mean of its divisors is an integer number (1765945368).

Almost surely, 2^6769457221 is an apocalyptic number.

It is an amenable number.

6769457221 is a deficient number, since it is larger than the sum of its proper divisors (294324251).

6769457221 is a wasteful number, since it uses less digits than its factorization.

6769457221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294324250.

The product of its digits is 1270080, while the sum is 49.

The square root of 6769457221 is about 82276.7112918352. The cubic root of 6769457221 is about 1891.6957263335.

The spelling of 6769457221 in words is "six billion, seven hundred sixty-nine million, four hundred fifty-seven thousand, two hundred twenty-one".