66887335400 has 24 divisors (see below), whose sum is σ = 155513055270. Its totient is φ = 26754934080.

The previous prime is 66887335399. The next prime is 66887335421. The reversal of 66887335400 is 453378866.

It can be written as a sum of positive squares in 3 ways, for example, as 38460700996 + 28426634404 = 196114^2 + 168602^2 .

It is a hoax number, since the sum of its digits (50) 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 (50).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167218139 + ... + 167218538.

Almost surely, 2^66887335400 is an apocalyptic number.

It is an amenable number.

66887335400 is an abundant number, since it is smaller than the sum of its proper divisors (88625719870).

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

66887335400 is a wasteful number, since it uses less digits than its factorization.

66887335400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334436693 (or 334436684 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 66887335400 in words is "sixty-six billion, eight hundred eighty-seven million, three hundred thirty-five thousand, four hundred".