621071423 has 6 divisors (see below), whose sum is σ = 722470896. Its totient is φ = 532346892.

The previous prime is 621071419. The next prime is 621071447. The reversal of 621071423 is 324170126.

It is not a de Polignac number, because 621071423 - 2² = 621071419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 621071392 and 621071401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621071413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6337415 + ... + 6337512.

It is an arithmetic number, because the mean of its divisors is an integer number (120411816).

Almost surely, 2^621071423 is an apocalyptic number.

621071423 is a deficient number, since it is larger than the sum of its proper divisors (101399473).

621071423 is a wasteful number, since it uses less digits than its factorization.

621071423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12674941 (or 12674934 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 621071423 is about 24921.3046006825. The cubic root of 621071423 is about 853.1928008355.

The spelling of 621071423 in words is "six hundred twenty-one million, seventy-one thousand, four hundred twenty-three".