4240645 has 16 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 3240000.

The previous prime is 4240627. The next prime is 4240661. The reversal of 4240645 is 5460424.

It is not a de Polignac number, because 4240645 - 2¹³ = 4232453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16770 + ... + 17020.

It is an arithmetic number, because the mean of its divisors is an integer number (332640).

Almost surely, 2^4240645 is an apocalyptic number.

It is an amenable number.

4240645 is a deficient number, since it is larger than the sum of its proper divisors (1081595).

4240645 is a wasteful number, since it uses less digits than its factorization.

4240645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 4240645 is about 2059.2826420868. The cubic root of 4240645 is about 161.8616534665.

The spelling of 4240645 in words is "four million, two hundred forty thousand, six hundred forty-five".