40661763 has 8 divisors (see below), whose sum is σ = 54275088. Its totient is φ = 27078144.

The previous prime is 40661743. The next prime is 40661821. The reversal of 40661763 is 36716604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40661763 - 2⁸ = 40661507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40661713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4006 + ... + 9867.

It is an arithmetic number, because the mean of its divisors is an integer number (6784386).

Almost surely, 2^40661763 is an apocalyptic number.

40661763 is a deficient number, since it is larger than the sum of its proper divisors (13613325).

40661763 is a wasteful number, since it uses less digits than its factorization.

40661763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14853.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 40661763 is about 6376.6576668346. The cubic root of 40661763 is about 343.8708812111.

The spelling of 40661763 in words is "forty million, six hundred sixty-one thousand, seven hundred sixty-three".