40661061 has 16 divisors (see below), whose sum is σ = 62834688. Its totient is φ = 22906800.

The previous prime is 40661051. The next prime is 40661087. The reversal of 40661061 is 16016604.

It is not a de Polignac number, because 40661061 - 2⁵ = 40661029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40661041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12145 + ... + 15126.

It is an arithmetic number, because the mean of its divisors is an integer number (3927168).

Almost surely, 2^40661061 is an apocalyptic number.

It is an amenable number.

40661061 is a deficient number, since it is larger than the sum of its proper divisors (22173627).

40661061 is a wasteful number, since it uses less digits than its factorization.

40661061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27352.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 40661061 is about 6376.6026220865. The cubic root of 40661061 is about 343.8689022942.

Adding to 40661061 its reverse (16016604), we get a palindrome (56677665).

The spelling of 40661061 in words is "forty million, six hundred sixty-one thousand, sixty-one".