621714171 has 16 divisors (see below), whose sum is σ = 893231136. Its totient is φ = 382373376.

The previous prime is 621714131. The next prime is 621714227. The reversal of 621714171 is 171417126.

It is not a de Polignac number, because 621714171 - 2¹³ = 621705979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (621714101) 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 15 ways as a sum of consecutive naturals, for example, 87571 + ... + 94403.

It is an arithmetic number, because the mean of its divisors is an integer number (55826946).

Almost surely, 2^621714171 is an apocalyptic number.

621714171 is a deficient number, since it is larger than the sum of its proper divisors (271516965).

621714171 is a wasteful number, since it uses less digits than its factorization.

621714171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9182.

The product of its digits is 2352, while the sum is 30.

The square root of 621714171 is about 24934.1968188270. The cubic root of 621714171 is about 853.4870229806.

The spelling of 621714171 in words is "six hundred twenty-one million, seven hundred fourteen thousand, one hundred seventy-one".