424761660 has 144 divisors (see below), whose sum is σ = 1376234496. Its totient is φ = 105670656.

The previous prime is 424761647. The next prime is 424761683. The reversal of 424761660 is 66167424.

424761660 is a `hidden beast` number, since 424 + 76 + 166 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 388074 + ... + 389166.

It is an arithmetic number, because the mean of its divisors is an integer number (9557184).

Almost surely, 2^424761660 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 424761660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688117248).

424761660 is an abundant number, since it is smaller than the sum of its proper divisors (951472836).

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

424761660 is a wasteful number, since it uses less digits than its factorization.

424761660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 424761660 is about 20609.7467233346. The cubic root of 424761660 is about 751.7067265001.

The spelling of 424761660 in words is "four hundred twenty-four million, seven hundred sixty-one thousand, six hundred sixty".