4631661 has 20 divisors (see below), whose sum is σ = 6977344. Its totient is φ = 3061800.

The previous prime is 4631651. The next prime is 4631663. The reversal of 4631661 is 1661364.

It is not a de Polignac number, because 4631661 - 2⁵ = 4631629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4631663) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16956 + ... + 17226.

Almost surely, 2^4631661 is an apocalyptic number.

It is an amenable number.

4631661 is a deficient number, since it is larger than the sum of its proper divisors (2345683).

4631661 is a wasteful number, since it uses less digits than its factorization.

4631661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 485 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 4631661 is about 2152.1294106071. The cubic root of 4631661 is about 166.6910395467.

The spelling of 4631661 in words is "four million, six hundred thirty-one thousand, six hundred sixty-one".