366921 has 12 divisors (see below), whose sum is σ = 539760. Its totient is φ = 240120.

The previous prime is 366917. The next prime is 366923. The reversal of 366921 is 129663.

366921 = 48² + 49² + ... + 106².

It is a happy number.

It is not a de Polignac number, because 366921 - 2² = 366917 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 366921.

It is not an unprimeable number, because it can be changed into a prime (366923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186 + ... + 876.

It is an arithmetic number, because the mean of its divisors is an integer number (44980).

2³⁶⁶⁹²¹ is an apocalyptic number.

It is an amenable number.

366921 is a deficient number, since it is larger than the sum of its proper divisors (172839).

366921 is a wasteful number, since it uses less digits than its factorization.

366921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756 (or 753 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 366921 is about 605.7400432529. The cubic root of 366921 is about 71.5908506562.

The spelling of 366921 in words is "three hundred sixty-six thousand, nine hundred twenty-one".