66894088 has 8 divisors (see below), whose sum is σ = 125426430. Its totient is φ = 33447040.

The previous prime is 66894077. The next prime is 66894127. The reversal of 66894088 is 88049866.

It can be written as a sum of positive squares in only one way, i.e., 62062884 + 4831204 = 7878^2 + 2198^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4180873 + ... + 4180888.

Almost surely, 2^66894088 is an apocalyptic number.

It is an amenable number.

66894088 is a deficient number, since it is larger than the sum of its proper divisors (58532342).

66894088 is a wasteful number, since it uses less digits than its factorization.

66894088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8361767 (or 8361763 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 66894088 is about 8178.8806080050. The cubic root of 66894088 is about 405.9406839016.

The spelling of 66894088 in words is "sixty-six million, eight hundred ninety-four thousand, eighty-eight".