621375423 has 8 divisors (see below), whose sum is σ = 828624048. Its totient is φ = 414188544.

The previous prime is 621375421. The next prime is 621375481. The reversal of 621375423 is 324573126.

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

It is not a de Polignac number, because 621375423 - 2¹ = 621375421 is a prime.

It is a super-2 number, since 2×621375423² = 772214832616857858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621375421) 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, 19065 + ... + 40077.

It is an arithmetic number, because the mean of its divisors is an integer number (103578006).

Almost surely, 2^621375423 is an apocalyptic number.

621375423 is a deficient number, since it is larger than the sum of its proper divisors (207248625).

621375423 is a wasteful number, since it uses less digits than its factorization.

621375423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30873.

The product of its digits is 30240, while the sum is 33.

The square root of 621375423 is about 24927.4030536677. The cubic root of 621375423 is about 853.3319841321.

The spelling of 621375423 in words is "six hundred twenty-one million, three hundred seventy-five thousand, four hundred twenty-three".