461621 has 4 divisors (see below), whose sum is σ = 476544. Its totient is φ = 446700.

The previous prime is 461609. The next prime is 461627. The reversal of 461621 is 126164.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-461621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 461593 and 461602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461627) 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, 7415 + ... + 7476.

It is an arithmetic number, because the mean of its divisors is an integer number (119136).

2⁴⁶¹⁶²¹ is an apocalyptic number.

It is an amenable number.

461621 is a deficient number, since it is larger than the sum of its proper divisors (14923).

461621 is a wasteful number, since it uses less digits than its factorization.

461621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14922.

The product of its digits is 288, while the sum is 20.

The square root of 461621 is about 679.4269644340. The cubic root of 461621 is about 77.2849954727.

Adding to 461621 its reverse (126164), we get a palindrome (587785).

The spelling of 461621 in words is "four hundred sixty-one thousand, six hundred twenty-one".