622405727 has 4 divisors (see below), whose sum is σ = 624620976. Its totient is φ = 620190480.

The previous prime is 622405723. The next prime is 622405757. The reversal of 622405727 is 727504226.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 622405727 - 2² = 622405723 is a prime.

It is a super-3 number, since 3×622405727³ (a number of 27 digits) contains 333 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 (622405723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107203 + ... + 1107764.

It is an arithmetic number, because the mean of its divisors is an integer number (156155244).

Almost surely, 2^622405727 is an apocalyptic number.

622405727 is a deficient number, since it is larger than the sum of its proper divisors (2215249).

622405727 is a wasteful number, since it uses less digits than its factorization.

622405727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215248.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 622405727 is about 24948.0605859454. The cubic root of 622405727 is about 853.8033609313.

The spelling of 622405727 in words is "six hundred twenty-two million, four hundred five thousand, seven hundred twenty-seven".