4640540 has 24 divisors (see below), whose sum is σ = 10010112. Its totient is φ = 1805760.

The previous prime is 4640501. The next prime is 4640543. The reversal of 4640540 is 450464.

It is a happy number.

It is a super-2 number, since 2×4640540² = 43069222983200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2396 + ... + 3875.

It is an arithmetic number, because the mean of its divisors is an integer number (417088).

Almost surely, 2^4640540 is an apocalyptic number.

It is an amenable number.

4640540 is an abundant number, since it is smaller than the sum of its proper divisors (5369572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4640540 is a wasteful number, since it uses less digits than its factorization.

4640540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317 (or 6315 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4640540 is about 2154.1912635604. The cubic root of 4640540 is about 166.7974883983.

The spelling of 4640540 in words is "four million, six hundred forty thousand, five hundred forty".