4635640 has 16 divisors (see below), whose sum is σ = 10430280. Its totient is φ = 1854240.

The previous prime is 4635637. The next prime is 4635649. The reversal of 4635640 is 465364.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4635599 and 4635608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4635649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57906 + ... + 57985.

Almost surely, 2^4635640 is an apocalyptic number.

4635640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4635640 is an abundant number, since it is smaller than the sum of its proper divisors (5794640).

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

4635640 is a wasteful number, since it uses less digits than its factorization.

4635640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115902 (or 115898 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 4635640 is about 2153.0536454069. The cubic root of 4635640 is about 166.7387599220.

The spelling of 4635640 in words is "four million, six hundred thirty-five thousand, six hundred forty".