487621 has 4 divisors (see below), whose sum is σ = 490144. Its totient is φ = 485100.

The previous prime is 487607. The next prime is 487637. The reversal of 487621 is 126784.

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 487621 - 2⁵ = 487589 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 487621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487601) 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, 945 + ... + 1366.

It is an arithmetic number, because the mean of its divisors is an integer number (122536).

2⁴⁸⁷⁶²¹ is an apocalyptic number.

It is an amenable number.

487621 is a deficient number, since it is larger than the sum of its proper divisors (2523).

487621 is a wasteful number, since it uses less digits than its factorization.

487621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522.

The product of its digits is 2688, while the sum is 28.

The square root of 487621 is about 698.2986467121. The cubic root of 487621 is about 78.7095567928.

The spelling of 487621 in words is "four hundred eighty-seven thousand, six hundred twenty-one".