727621 has 2 divisors, whose sum is σ = 727622. Its totient is φ = 727620.

The previous prime is 727613. The next prime is 727633. The reversal of 727621 is 126727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 662596 + 65025 = 814^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 727621 - 2³ = 727613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (727691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363810 + 363811.

It is an arithmetic number, because the mean of its divisors is an integer number (363811).

2⁷²⁷⁶²¹ is an apocalyptic number.

It is an amenable number.

727621 is a deficient number, since it is larger than the sum of its proper divisors (1).

727621 is an equidigital number, since it uses as much as digits as its factorization.

727621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 25.

The square root of 727621 is about 853.0070339687. The cubic root of 727621 is about 89.9432152084.

The spelling of 727621 in words is "seven hundred twenty-seven thousand, six hundred twenty-one".