6428091 has 8 divisors (see below), whose sum is σ = 9075024. Its totient is φ = 4033280.

The previous prime is 6428087. The next prime is 6428117. The reversal of 6428091 is 1908246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6428091 - 2² = 6428087 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6428011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62970 + ... + 63071.

It is an arithmetic number, because the mean of its divisors is an integer number (1134378).

Almost surely, 2^6428091 is an apocalyptic number.

6428091 is a deficient number, since it is larger than the sum of its proper divisors (2646933).

6428091 is a wasteful number, since it uses less digits than its factorization.

6428091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126061.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 6428091 is about 2535.3680206234. The cubic root of 6428091 is about 185.9347961992.

The spelling of 6428091 in words is "six million, four hundred twenty-eight thousand, ninety-one".