451660 has 24 divisors (see below), whose sum is σ = 1035216. Its totient is φ = 164160.

The previous prime is 451657. The next prime is 451663. The reversal of 451660 is 66154.

It is an interprime number because it is at equal distance from previous prime (451657) and next prime (451663).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (451663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807 + ... + 1246.

It is an arithmetic number, because the mean of its divisors is an integer number (43134).

2⁴⁵¹⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

451660 is an abundant number, since it is smaller than the sum of its proper divisors (583556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451660 is a wasteful number, since it uses less digits than its factorization.

451660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073 (or 2071 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 451660 is about 672.0565452401. The cubic root of 451660 is about 76.7250552894.

It can be divided in two parts, 451 and 660, that added together give a palindrome (1111).

The spelling of 451660 in words is "four hundred fifty-one thousand, six hundred sixty".