1666410624 has 64 divisors (see below), whose sum is σ = 4918236000. Its totient is φ = 555469056.

The previous prime is 1666410607. The next prime is 1666410631. The reversal of 1666410624 is 4260146661.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237634 + ... + 244545.

Almost surely, 2^1666410624 is an apocalyptic number.

It is an amenable number.

1666410624 is an abundant number, since it is smaller than the sum of its proper divisors (3251825376).

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

1666410624 is an equidigital number, since it uses as much as digits as its factorization.

1666410624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482202 (or 482184 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1666410624 is about 40821.6930565110. The cubic root of 1666410624 is about 1185.5703839575.

The spelling of 1666410624 in words is "one billion, six hundred sixty-six million, four hundred ten thousand, six hundred twenty-four".