451803660 has 192 divisors, whose sum is σ = 1660538880. Its totient is φ = 88922880.

The previous prime is 451803647. The next prime is 451803683. The reversal of 451803660 is 66308154.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85207 + ... + 90353.

It is an arithmetic number, because the mean of its divisors is an integer number (8648640).

Almost surely, 2^451803660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451803660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (830269440).

451803660 is an abundant number, since it is smaller than the sum of its proper divisors (1208735220).

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

451803660 is a wasteful number, since it uses less digits than its factorization.

451803660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5196 (or 5194 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 451803660 is about 21255.6735955368. The cubic root of 451803660 is about 767.3318910176.

The spelling of 451803660 in words is "four hundred fifty-one million, eight hundred three thousand, six hundred sixty".