40663773 has 24 divisors (see below), whose sum is σ = 60327072. Its totient is φ = 26383968.

The previous prime is 40663751. The next prime is 40663787. The reversal of 40663773 is 37736604.

It is a de Polignac number, because none of the positive numbers 2^k-40663773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40663673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77490 + ... + 78012.

It is an arithmetic number, because the mean of its divisors is an integer number (2513628).

Almost surely, 2^40663773 is an apocalyptic number.

It is an amenable number.

40663773 is a deficient number, since it is larger than the sum of its proper divisors (19663299).

40663773 is a wasteful number, since it uses less digits than its factorization.

40663773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 40663773 is about 6376.8152709640. The cubic root of 40663773 is about 343.8765472147.

The spelling of 40663773 in words is "forty million, six hundred sixty-three thousand, seven hundred seventy-three".