4640513 has 4 divisors (see below), whose sum is σ = 4644948. Its totient is φ = 4636080.

The previous prime is 4640501. The next prime is 4640543. The reversal of 4640513 is 3150464.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1567504 + 3073009 = 1252^2 + 1753^2 .

It is a cyclic number.

It is not a de Polignac number, because 4640513 - 2⁴ = 4640497 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 323 + ... + 3063.

It is an arithmetic number, because the mean of its divisors is an integer number (1161237).

Almost surely, 2^4640513 is an apocalyptic number.

It is an amenable number.

4640513 is a deficient number, since it is larger than the sum of its proper divisors (4435).

4640513 is a wasteful number, since it uses less digits than its factorization.

4640513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434.

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

The square root of 4640513 is about 2154.1849966983. The cubic root of 4640513 is about 166.7971649057.

Adding to 4640513 its reverse (3150464), we get a palindrome (7790977).

The spelling of 4640513 in words is "four million, six hundred forty thousand, five hundred thirteen".