621347901 has 8 divisors (see below), whose sum is σ = 828869184. Its totient is φ = 414029280.

The previous prime is 621347879. The next prime is 621347929. The reversal of 621347901 is 109743126.

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

It is not a de Polignac number, because 621347901 - 2¹¹ = 621345853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621347941) 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, 43360 + ... + 55881.

It is an arithmetic number, because the mean of its divisors is an integer number (103608648).

Almost surely, 2^621347901 is an apocalyptic number.

It is an amenable number.

621347901 is a deficient number, since it is larger than the sum of its proper divisors (207521283).

621347901 is a wasteful number, since it uses less digits than its factorization.

621347901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101331.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 621347901 is about 24926.8510044891. The cubic root of 621347901 is about 853.3193853345.

The spelling of 621347901 in words is "six hundred twenty-one million, three hundred forty-seven thousand, nine hundred one".