621871347 has 8 divisors (see below), whose sum is σ = 829551040. Its totient is φ = 414386280.

The previous prime is 621871343. The next prime is 621871351. The reversal of 621871347 is 743178126.

It is an interprime number because it is at equal distance from previous prime (621871343) and next prime (621871351).

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

It is not a de Polignac number, because 621871347 - 2² = 621871343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621871343) 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 7 ways as a sum of consecutive naturals, for example, 41029 + ... + 54102.

It is an arithmetic number, because the mean of its divisors is an integer number (103693880).

Almost surely, 2^621871347 is an apocalyptic number.

621871347 is a deficient number, since it is larger than the sum of its proper divisors (207679693).

621871347 is a wasteful number, since it uses less digits than its factorization.

621871347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97313.

The product of its digits is 56448, while the sum is 39.

The square root of 621871347 is about 24937.3484356296. The cubic root of 621871347 is about 853.5589404734.

The spelling of 621871347 in words is "six hundred twenty-one million, eight hundred seventy-one thousand, three hundred forty-seven".