66054016 has 32 divisors (see below), whose sum is σ = 150392880. Its totient is φ = 28308480.

The previous prime is 66053987. The next prime is 66054017. The reversal of 66054016 is 61045066.

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

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66054017) 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, 35965 + ... + 37756.

Almost surely, 2^66054016 is an apocalyptic number.

It is an amenable number.

66054016 is an abundant number, since it is smaller than the sum of its proper divisors (84338864).

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

66054016 is an equidigital number, since it uses as much as digits as its factorization.

66054016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73742 (or 73730 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66054016 is about 8127.3621796989. The cubic root of 66054016 is about 404.2342202927.

The spelling of 66054016 in words is "sixty-six million, fifty-four thousand, sixteen".