4640135 has 16 divisors (see below), whose sum is σ = 5870016. Its totient is φ = 3514368.

The previous prime is 4640131. The next prime is 4640137. The reversal of 4640135 is 5310464.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4640135 - 2² = 4640131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 4640135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17927 + ... + 18183.

It is an arithmetic number, because the mean of its divisors is an integer number (366876).

Almost surely, 2^4640135 is an apocalyptic number.

4640135 is a deficient number, since it is larger than the sum of its proper divisors (1229881).

4640135 is a wasteful number, since it uses less digits than its factorization.

4640135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 4640135 is about 2154.0972587142. The cubic root of 4640135 is about 166.7926358777.

Adding to 4640135 its reverse (5310464), we get a palindrome (9950599).

The spelling of 4640135 in words is "four million, six hundred forty thousand, one hundred thirty-five".