4640651 has 4 divisors (see below), whose sum is σ = 4766112. Its totient is φ = 4515192.

The previous prime is 4640599. The next prime is 4640717. The reversal of 4640651 is 1560464.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4640651 is a prime.

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 4640651.

It is not an unprimeable number, because it can be changed into a prime (4645651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62675 + ... + 62748.

It is an arithmetic number, because the mean of its divisors is an integer number (1191528).

Almost surely, 2^4640651 is an apocalyptic number.

4640651 is a deficient number, since it is larger than the sum of its proper divisors (125461).

4640651 is a wasteful number, since it uses less digits than its factorization.

4640651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125460.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4640651 is about 2154.2170271354. The cubic root of 4640651 is about 166.7988182991.

The spelling of 4640651 in words is "four million, six hundred forty thousand, six hundred fifty-one".