366631 has 2 divisors, whose sum is σ = 366632. Its totient is φ = 366630.

The previous prime is 366607. The next prime is 366677. The reversal of 366631 is 136663.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 366631 - 2⁵ = 366599 is a prime.

It is a super-2 number, since 2×366631² = 268836580322, which contains 22 as substring.

It is the 606-th Hogben number.

It is a junction number, because it is equal to n+sod(n) for n = 366596 and 366605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (366031) by changing a digit.

It is a nontrivial repunit in base 605.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183315 + 183316.

It is an arithmetic number, because the mean of its divisors is an integer number (183316).

2³⁶⁶⁶³¹ is an apocalyptic number.

366631 is a deficient number, since it is larger than the sum of its proper divisors (1).

366631 is an equidigital number, since it uses as much as digits as its factorization.

366631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 25.

The square root of 366631 is about 605.5006193226. The cubic root of 366631 is about 71.5719848161.

The spelling of 366631 in words is "three hundred sixty-six thousand, six hundred thirty-one".