44066781 has 32 divisors (see below), whose sum is σ = 74327040. Its totient is φ = 25542000.

The previous prime is 44066749. The next prime is 44066819. The reversal of 44066781 is 18766044.

It is not a de Polignac number, because 44066781 - 2⁵ = 44066749 is a prime.

It is a super-2 number, since 2×44066781² = 3883762375403922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44066081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3606 + ... + 10056.

It is an arithmetic number, because the mean of its divisors is an integer number (2322720).

Almost surely, 2^44066781 is an apocalyptic number.

It is an amenable number.

44066781 is a deficient number, since it is larger than the sum of its proper divisors (30260259).

44066781 is a wasteful number, since it uses less digits than its factorization.

44066781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6494 (or 6488 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 44066781 is about 6638.2814794192. The cubic root of 44066781 is about 353.2133494551.

The spelling of 44066781 in words is "forty-four million, sixty-six thousand, seven hundred eighty-one".