620127881 has 8 divisors (see below), whose sum is σ = 644047560. Its totient is φ = 596585088.

The previous prime is 620127821. The next prime is 620127973. The reversal of 620127881 is 188721026.

620127881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 32307856 + 587820025 = 5684^2 + 24245^2 .

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 620127881 - 2²⁶ = 553019017 is a prime.

It is a super-2 number, since 2×620127881² = 769117177587100322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620127821) 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, 90866 + ... + 97451.

It is an arithmetic number, because the mean of its divisors is an integer number (80505945).

Almost surely, 2^620127881 is an apocalyptic number.

It is an amenable number.

620127881 is a deficient number, since it is larger than the sum of its proper divisors (23919679).

620127881 is a wasteful number, since it uses less digits than its factorization.

620127881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188443.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 620127881 is about 24902.3669758519. The cubic root of 620127881 is about 852.7605203041.

The spelling of 620127881 in words is "six hundred twenty million, one hundred twenty-seven thousand, eight hundred eighty-one".