40661363 has 2 divisors, whose sum is σ = 40661364. Its totient is φ = 40661362.

The previous prime is 40661353. The next prime is 40661371. The reversal of 40661363 is 36316604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40661363 - 2²⁰ = 39612787 is a prime.

It is not a weakly prime, because it can be changed into another prime (40661323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20330681 + 20330682.

It is an arithmetic number, because the mean of its divisors is an integer number (20330682).

Almost surely, 2^40661363 is an apocalyptic number.

40661363 is a deficient number, since it is larger than the sum of its proper divisors (1).

40661363 is an equidigital number, since it uses as much as digits as its factorization.

40661363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 40661363 is about 6376.6263023640. The cubic root of 40661363 is about 343.8697536259.

Adding to 40661363 its reverse (36316604), we get a palindrome (76977967).

The spelling of 40661363 in words is "forty million, six hundred sixty-one thousand, three hundred sixty-three".