666053500 has 48 divisors (see below), whose sum is σ = 1662478272. Its totient is φ = 228360000.

The previous prime is 666053467. The next prime is 666053513. The reversal of 666053500 is 5350666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91651 + ... + 98650.

It is an arithmetic number, because the mean of its divisors is an integer number (34634964).

Almost surely, 2^666053500 is an apocalyptic number.

It is an amenable number.

666053500 is an abundant number, since it is smaller than the sum of its proper divisors (996424772).

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

666053500 is a wasteful number, since it uses less digits than its factorization.

666053500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190327 (or 190315 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 666053500 is about 25808.0123217578. The cubic root of 666053500 is about 873.3125573728.

The spelling of 666053500 in words is "six hundred sixty-six million, fifty-three thousand, five hundred".