66340444 has 6 divisors (see below), whose sum is σ = 116095784. Its totient is φ = 33170220.

The previous prime is 66340433. The next prime is 66340481. The reversal of 66340444 is 44404366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8292552 + ... + 8292559.

Almost surely, 2^66340444 is an apocalyptic number.

It is an amenable number.

66340444 is a deficient number, since it is larger than the sum of its proper divisors (49755340).

66340444 is a wasteful number, since it uses less digits than its factorization.

66340444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16585115 (or 16585113 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 66340444 is about 8144.9643338691. The cubic root of 66340444 is about 404.8176672522.

The spelling of 66340444 in words is "sixty-six million, three hundred forty thousand, four hundred forty-four".