66436044 has 12 divisors (see below), whose sum is σ = 155017464. Its totient is φ = 22145344.

The previous prime is 66436043. The next prime is 66436057. The reversal of 66436044 is 44063466.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 66435996 and 66436014.

It is not an unprimeable number, because it can be changed into a prime (66436043) 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, 2768157 + ... + 2768180.

It is an arithmetic number, because the mean of its divisors is an integer number (12918122).

Almost surely, 2^66436044 is an apocalyptic number.

It is an amenable number.

66436044 is an abundant number, since it is smaller than the sum of its proper divisors (88581420).

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

66436044 is a wasteful number, since it uses less digits than its factorization.

66436044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5536344 (or 5536342 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 66436044 is about 8150.8308778921. The cubic root of 66436044 is about 405.0120282969.

The spelling of 66436044 in words is "sixty-six million, four hundred thirty-six thousand, forty-four".