6945257 has 4 divisors (see below), whose sum is σ = 7576656. Its totient is φ = 6313860.

The previous prime is 6945251. The next prime is 6945283. The reversal of 6945257 is 7525496.

It is a happy number.

6945257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6945257 - 2⁶ = 6945193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6945257.

It is not an unprimeable number, because it can be changed into a prime (6945251) 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, 315683 + ... + 315704.

It is an arithmetic number, because the mean of its divisors is an integer number (1894164).

Almost surely, 2^6945257 is an apocalyptic number.

It is an amenable number.

6945257 is a deficient number, since it is larger than the sum of its proper divisors (631399).

6945257 is a wasteful number, since it uses less digits than its factorization.

6945257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631398.

The product of its digits is 75600, while the sum is 38.

The square root of 6945257 is about 2635.3855505409. The cubic root of 6945257 is about 190.7931479534.

The spelling of 6945257 in words is "six million, nine hundred forty-five thousand, two hundred fifty-seven".