386621 has 2 divisors, whose sum is σ = 386622. Its totient is φ = 386620.

The previous prime is 386611. The next prime is 386629. The reversal of 386621 is 126683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 290521 + 96100 = 539^2 + 310^2 .

It is an emirp because it is prime and its reverse (126683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 386621 - 2¹⁰ = 385597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (386629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193310 + 193311.

It is an arithmetic number, because the mean of its divisors is an integer number (193311).

2³⁸⁶⁶²¹ is an apocalyptic number.

It is an amenable number.

386621 is a deficient number, since it is larger than the sum of its proper divisors (1).

386621 is an equidigital number, since it uses as much as digits as its factorization.

386621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 386621 is about 621.7885492674. The cubic root of 386621 is about 72.8498194796.

The spelling of 386621 in words is "three hundred eighty-six thousand, six hundred twenty-one".