4640161 has 4 divisors (see below), whose sum is σ = 4884400. Its totient is φ = 4395924.

The previous prime is 4640159. The next prime is 4640171. The reversal of 4640161 is 1610464.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4640161 - 2¹ = 4640159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4640131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122091 + ... + 122128.

It is an arithmetic number, because the mean of its divisors is an integer number (1221100).

Almost surely, 2^4640161 is an apocalyptic number.

It is an amenable number.

4640161 is a deficient number, since it is larger than the sum of its proper divisors (244239).

4640161 is a wasteful number, since it uses less digits than its factorization.

4640161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244238.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 4640161 is about 2154.1032937164. The cubic root of 4640161 is about 166.7929474060.

The spelling of 4640161 in words is "four million, six hundred forty thousand, one hundred sixty-one".