621471 has 8 divisors (see below), whose sum is σ = 872320. Its totient is φ = 392472.

The previous prime is 621461. The next prime is 621473. The reversal of 621471 is 174126.

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

It is not a de Polignac number, because 621471 - 2⁷ = 621343 is a prime.

It is a super-3 number, since 3×621471³ = 720085155381810333, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621473) 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, 5395 + ... + 5508.

It is an arithmetic number, because the mean of its divisors is an integer number (109040).

2⁶²¹⁴⁷¹ is an apocalyptic number.

621471 is a deficient number, since it is larger than the sum of its proper divisors (250849).

621471 is a wasteful number, since it uses less digits than its factorization.

621471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10925.

The product of its digits is 336, while the sum is 21.

The square root of 621471 is about 788.3343199430. The cubic root of 621471 is about 85.3375733706.

Adding to 621471 its reverse (174126), we get a palindrome (795597).

The spelling of 621471 in words is "six hundred twenty-one thousand, four hundred seventy-one".