621484 has 6 divisors (see below), whose sum is σ = 1087604. Its totient is φ = 310740.

The previous prime is 621473. The next prime is 621521. The reversal of 621484 is 484126.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77682 + ... + 77689.

2⁶²¹⁴⁸⁴ is an apocalyptic number.

It is an amenable number.

621484 is a deficient number, since it is larger than the sum of its proper divisors (466120).

621484 is a wasteful number, since it uses less digits than its factorization.

621484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155375 (or 155373 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 621484 is about 788.3425651327. The cubic root of 621484 is about 85.3381684001.

The spelling of 621484 in words is "six hundred twenty-one thousand, four hundred eighty-four".