3257649 has 6 divisors (see below), whose sum is σ = 4705506. Its totient is φ = 2171760.

The previous prime is 3257641. The next prime is 3257663. The reversal of 3257649 is 9467523.

3257649 is a `hidden beast` number, since 3 + 2 + 5 + 7 + 649 = 666.

3257649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 1140624 = 1455^2 + 1068^2 .

It is not a de Polignac number, because 3257649 - 2³ = 3257641 is a prime.

It is a super-2 number, since 2×3257649² = 21224554014402, which contains 22 as substring.

3257649 is a lucky number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (3257641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 180972 + ... + 180989.

It is an arithmetic number, because the mean of its divisors is an integer number (784251).

Almost surely, 2^3257649 is an apocalyptic number.

It is an amenable number.

3257649 is a deficient number, since it is larger than the sum of its proper divisors (1447857).

3257649 is a wasteful number, since it uses less digits than its factorization.

3257649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361967 (or 361964 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 3257649 is about 1804.8958418701. The cubic root of 3257649 is about 148.2409181818.

The spelling of 3257649 in words is "three million, two hundred fifty-seven thousand, six hundred forty-nine".