40727668 has 6 divisors (see below), whose sum is σ = 71273426. Its totient is φ = 20363832.

The previous prime is 40727663. The next prime is 40727693. The reversal of 40727668 is 86672704.

It can be written as a sum of positive squares in only one way, i.e., 29289744 + 11437924 = 5412^2 + 3382^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40727668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40727663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5090955 + ... + 5090962.

Almost surely, 2^40727668 is an apocalyptic number.

It is an amenable number.

40727668 is a deficient number, since it is larger than the sum of its proper divisors (30545758).

40727668 is a wasteful number, since it uses less digits than its factorization.

40727668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10181921 (or 10181919 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 40727668 is about 6381.8232504512. The cubic root of 40727668 is about 344.0565640716.

The spelling of 40727668 in words is "forty million, seven hundred twenty-seven thousand, six hundred sixty-eight".