4491651 has 8 divisors (see below), whose sum is σ = 6128320. Its totient is φ = 2924712.

The previous prime is 4491631. The next prime is 4491653. The reversal of 4491651 is 1561944.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4491651 - 2¹⁷ = 4360579 is a prime.

It is a Duffinian number.

4491651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4491653) 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, 17281 + ... + 17538.

It is an arithmetic number, because the mean of its divisors is an integer number (766040).

Almost surely, 2^4491651 is an apocalyptic number.

4491651 is a deficient number, since it is larger than the sum of its proper divisors (1636669).

4491651 is a wasteful number, since it uses less digits than its factorization.

4491651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34865.

The product of its digits is 4320, while the sum is 30.

The square root of 4491651 is about 2119.3515517724. The cubic root of 4491651 is about 164.9941963064.

The spelling of 4491651 in words is "four million, four hundred ninety-one thousand, six hundred fifty-one".