621114871 has 8 divisors (see below), whose sum is σ = 679859264. Its totient is φ = 563937120.

The previous prime is 621114847. The next prime is 621114877. The reversal of 621114871 is 178411126.

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 621114871 - 2⁹ = 621114359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621114877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390831 + ... + 392416.

It is an arithmetic number, because the mean of its divisors is an integer number (84982408).

Almost surely, 2^621114871 is an apocalyptic number.

621114871 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

621114871 is a deficient number, since it is larger than the sum of its proper divisors (58744393).

621114871 is a wasteful number, since it uses less digits than its factorization.

621114871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783321.

The product of its digits is 2688, while the sum is 31.

The square root of 621114871 is about 24922.1762894014. The cubic root of 621114871 is about 853.2126958400.

Adding to 621114871 its reverse (178411126), we get a palindrome (799525997).

The spelling of 621114871 in words is "six hundred twenty-one million, one hundred fourteen thousand, eight hundred seventy-one".