4897661 has 4 divisors (see below), whose sum is σ = 4927872. Its totient is φ = 4867452.

The previous prime is 4897639. The next prime is 4897681. The reversal of 4897661 is 1667984.

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 4897661 - 2¹⁰ = 4896637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4897601) 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, 14861 + ... + 15186.

It is an arithmetic number, because the mean of its divisors is an integer number (1231968).

Almost surely, 2^4897661 is an apocalyptic number.

It is an amenable number.

4897661 is a deficient number, since it is larger than the sum of its proper divisors (30211).

4897661 is a wasteful number, since it uses less digits than its factorization.

4897661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30210.

The product of its digits is 72576, while the sum is 41.

The square root of 4897661 is about 2213.0659728079. The cubic root of 4897661 is about 169.8228951422.

The spelling of 4897661 in words is "four million, eight hundred ninety-seven thousand, six hundred sixty-one".