405454660 has 72 divisors (see below), whose sum is σ = 929698560. Its totient is φ = 148457088.

The previous prime is 405454631. The next prime is 405454663. The reversal of 405454660 is 66454504.

It is not an unprimeable number, because it can be changed into a prime (405454663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 469389 + ... + 470251.

It is an arithmetic number, because the mean of its divisors is an integer number (12912480).

Almost surely, 2^405454660 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 405454660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464849280).

405454660 is an abundant number, since it is smaller than the sum of its proper divisors (524243900).

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

405454660 is a wasteful number, since it uses less digits than its factorization.

405454660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 405454660 is about 20135.9047474902. The cubic root of 405454660 is about 740.1403799907.

The spelling of 405454660 in words is "four hundred five million, four hundred fifty-four thousand, six hundred sixty".