4624640 has 36 divisors (see below), whose sum is σ = 11080524. Its totient is φ = 1849344.

The previous prime is 4624639. The next prime is 4624643. The reversal of 4624640 is 464264.

It can be written as a sum of positive squares in 2 ways, for example, as 495616 + 4129024 = 704^2 + 2032^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4624643) 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, 527 + ... + 3086.

Almost surely, 2^4624640 is an apocalyptic number.

4624640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4624640 is an abundant number, since it is smaller than the sum of its proper divisors (6455884).

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

4624640 is an equidigital number, since it uses as much as digits as its factorization.

4624640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3634 (or 3620 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 4624640 is about 2150.4976168320. The cubic root of 4624640 is about 166.6067695877.

The spelling of 4624640 in words is "four million, six hundred twenty-four thousand, six hundred forty".