66374016 has 32 divisors (see below), whose sum is σ = 176307000. Its totient is φ = 22124544.

The previous prime is 66373981. The next prime is 66374017. The reversal of 66374016 is 61047366.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66374017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86041 + ... + 86808.

Almost surely, 2^66374016 is an apocalyptic number.

It is an amenable number.

66374016 is an abundant number, since it is smaller than the sum of its proper divisors (109932984).

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

66374016 is a wasteful number, since it uses less digits than its factorization.

66374016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172866 (or 172854 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 66374016 is about 8147.0249784814. The cubic root of 66374016 is about 404.8859425808.

The spelling of 66374016 in words is "sixty-six million, three hundred seventy-four thousand, sixteen".