4064257 has 4 divisors (see below), whose sum is σ = 4077396. Its totient is φ = 4051120.

The previous prime is 4064243. The next prime is 4064299. The reversal of 4064257 is 7524604.

It is a Cunningham number, because it is equal to 2016²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 226576 + 3837681 = 476^2 + 1959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4064257 is a prime.

It is a Duffinian number.

4064257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4064227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6094 + ... + 6727.

It is an arithmetic number, because the mean of its divisors is an integer number (1019349).

Almost surely, 2^4064257 is an apocalyptic number.

It is an amenable number.

4064257 is a deficient number, since it is larger than the sum of its proper divisors (13139).

4064257 is a wasteful number, since it uses less digits than its factorization.

4064257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13138.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 4064257 is about 2016.0002480159. Note that the first 3 decimals coincide. The cubic root of 4064257 is about 159.5856073562.

The spelling of 4064257 in words is "four million, sixty-four thousand, two hundred fifty-seven".