3640258 has 4 divisors (see below), whose sum is σ = 5460390. Its totient is φ = 1820128.

The previous prime is 3640249. The next prime is 3640289. The reversal of 3640258 is 8520463.

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

It can be written as a sum of positive squares in only one way, i.e., 1968409 + 1671849 = 1403^2 + 1293^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910063 + ... + 910066.

Almost surely, 2^3640258 is an apocalyptic number.

3640258 is a deficient number, since it is larger than the sum of its proper divisors (1820132).

3640258 is a wasteful number, since it uses less digits than its factorization.

3640258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820131.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 3640258 is about 1907.9460160078. The cubic root of 3640258 is about 153.8310679182.

The spelling of 3640258 in words is "three million, six hundred forty thousand, two hundred fifty-eight".