621147147 has 8 divisors (see below), whose sum is σ = 832488144. Its totient is φ = 411952128.

The previous prime is 621147127. The next prime is 621147161. The reversal of 621147147 is 741741126.

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

It is not a de Polignac number, because 621147147 - 2⁸ = 621146891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (621147127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535818 + ... + 536975.

It is an arithmetic number, because the mean of its divisors is an integer number (104061018).

Almost surely, 2^621147147 is an apocalyptic number.

621147147 is a deficient number, since it is larger than the sum of its proper divisors (211340997).

621147147 is a wasteful number, since it uses less digits than its factorization.

621147147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072989.

The product of its digits is 9408, while the sum is 33.

The square root of 621147147 is about 24922.8238167347. The cubic root of 621147147 is about 853.2274745427.

The spelling of 621147147 in words is "six hundred twenty-one million, one hundred forty-seven thousand, one hundred forty-seven".