366651 has 6 divisors (see below), whose sum is σ = 529620. Its totient is φ = 244428.

The previous prime is 366631. The next prime is 366677. The reversal of 366651 is 156663.

It is not a de Polignac number, because 366651 - 2⁹ = 366139 is a prime.

366651 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (366631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20361 + ... + 20378.

It is an arithmetic number, because the mean of its divisors is an integer number (88270).

2³⁶⁶⁶⁵¹ is an apocalyptic number.

366651 is a deficient number, since it is larger than the sum of its proper divisors (162969).

366651 is a wasteful number, since it uses less digits than its factorization.

366651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40745 (or 40742 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 366651 is about 605.5171343571. The cubic root of 366651 is about 71.5732862278.

It can be divided in two parts, 3666 and 51, that multiplied together give a triangular number (186966 = T₆₁₁).

The spelling of 366651 in words is "three hundred sixty-six thousand, six hundred fifty-one".