621472319 has 12 divisors (see below), whose sum is σ = 673680096. Its totient is φ = 573049152.

The previous prime is 621472303. The next prime is 621472321. The reversal of 621472319 is 913274126.

It is not a de Polignac number, because 621472319 - 2⁴ = 621472303 is a prime.

It is a super-2 number, since 2×621472319² = 772455686566475522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621472339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250067 + ... + 252539.

It is an arithmetic number, because the mean of its divisors is an integer number (56140008).

Almost surely, 2^621472319 is an apocalyptic number.

621472319 is a deficient number, since it is larger than the sum of its proper divisors (52207777).

621472319 is a wasteful number, since it uses less digits than its factorization.

621472319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986 (or 3973 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 621472319 is about 24929.3465417768. The cubic root of 621472319 is about 853.3763374358.

The spelling of 621472319 in words is "six hundred twenty-one million, four hundred seventy-two thousand, three hundred nineteen".