621488873 has 8 divisors (see below), whose sum is σ = 659625120. Its totient is φ = 583528000.

The previous prime is 621488867. The next prime is 621488893. The reversal of 621488873 is 378884126.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 621488873 - 2¹⁰ = 621487849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621488843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36503 + ... + 50748.

It is an arithmetic number, because the mean of its divisors is an integer number (82453140).

Almost surely, 2^621488873 is an apocalyptic number.

It is an amenable number.

621488873 is a deficient number, since it is larger than the sum of its proper divisors (38136247).

621488873 is a wasteful number, since it uses less digits than its factorization.

621488873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87687.

The product of its digits is 516096, while the sum is 47.

The square root of 621488873 is about 24929.6785578956. The cubic root of 621488873 is about 853.3839144246.

The spelling of 621488873 in words is "six hundred twenty-one million, four hundred eighty-eight thousand, eight hundred seventy-three".