200660640 has 48 divisors (see below), whose sum is σ = 632082528. Its totient is φ = 53509376.

The previous prime is 200660627. The next prime is 200660701. The reversal of 200660640 is 46066002.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 200660640.

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, 208542 + ... + 209501.

It is an arithmetic number, because the mean of its divisors is an integer number (13168386).

Almost surely, 2^200660640 is an apocalyptic number.

200660640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200660640 is an abundant number, since it is smaller than the sum of its proper divisors (431421888).

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

200660640 is a wasteful number, since it uses less digits than its factorization.

200660640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418061 (or 418053 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 200660640 is about 14165.4735183826. The cubic root of 200660640 is about 585.4467476483.

The spelling of 200660640 in words is "two hundred million, six hundred sixty thousand, six hundred forty".