621463424 has 32 divisors (see below), whose sum is σ = 1310904000. Its totient is φ = 292452352.

The previous prime is 621463421. The next prime is 621463429. The reversal of 621463424 is 424364126.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621463421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140624 + ... + 144975.

It is an arithmetic number, because the mean of its divisors is an integer number (40965750).

Almost surely, 2^621463424 is an apocalyptic number.

621463424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

621463424 is an abundant number, since it is smaller than the sum of its proper divisors (689440576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

621463424 is a wasteful number, since it uses less digits than its factorization.

621463424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285630 (or 285618 counting only the distinct ones).

The product of its digits is 27648, while the sum is 32.

The square root of 621463424 is about 24929.1681369435. The cubic root of 621463424 is about 853.3722660188.

The spelling of 621463424 in words is "six hundred twenty-one million, four hundred sixty-three thousand, four hundred twenty-four".