45140066 has 24 divisors (see below), whose sum is σ = 74435220. Its totient is φ = 20502272.

The previous prime is 45140063. The next prime is 45140071. The reversal of 45140066 is 66004154.

45140066 = 1934² + 1935² + ... + 1945².

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 33884041 + 11256025 = 5821^2 + 3355^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45140063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15416 + ... + 18108.

Almost surely, 2^45140066 is an apocalyptic number.

45140066 is a deficient number, since it is larger than the sum of its proper divisors (29295154).

45140066 is a wasteful number, since it uses less digits than its factorization.

45140066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 45140066 is about 6718.6357246096. The cubic root of 45140066 is about 356.0579851263.

The spelling of 45140066 in words is "forty-five million, one hundred forty thousand, sixty-six".