380621 has 2 divisors, whose sum is σ = 380622. Its totient is φ = 380620.

The previous prime is 380591. The next prime is 380623. The reversal of 380621 is 126083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212521 + 168100 = 461^2 + 410^2 .

It is a cyclic number.

It is not a de Polignac number, because 380621 - 2⁶ = 380557 is a prime.

Together with 380623, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 380593 and 380602.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 380621.

It is not a weakly prime, because it can be changed into another prime (380623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190310 + 190311.

It is an arithmetic number, because the mean of its divisors is an integer number (190311).

2³⁸⁰⁶²¹ is an apocalyptic number.

It is an amenable number.

380621 is a deficient number, since it is larger than the sum of its proper divisors (1).

380621 is an equidigital number, since it uses as much as digits as its factorization.

380621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 380621 is about 616.9448921905. The cubic root of 380621 is about 72.4709991024.

It can be divided in two parts, 380 and 621, that added together give a palindrome (1001).

The spelling of 380621 in words is "three hundred eighty thousand, six hundred twenty-one".