66885088 has 12 divisors (see below), whose sum is σ = 131680080. Its totient is φ = 33442528.

The previous prime is 66885083. The next prime is 66885121. The reversal of 66885088 is 88058866.

It is a super-2 number, since 2×66885088² = 8947229993535488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66885083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045048 + ... + 1045111.

It is an arithmetic number, because the mean of its divisors is an integer number (10973340).

Almost surely, 2^66885088 is an apocalyptic number.

It is an amenable number.

66885088 is a deficient number, since it is larger than the sum of its proper divisors (64794992).

66885088 is a wasteful number, since it uses less digits than its factorization.

66885088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090169 (or 2090161 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 49.

The square root of 66885088 is about 8178.3303919565. The cubic root of 66885088 is about 405.9224778581.

Subtracting 66885088 from its reverse (88058866), we obtain a triangular number (21173778 = T₆₅₀₇).

The spelling of 66885088 in words is "sixty-six million, eight hundred eighty-five thousand, eighty-eight".