40860661 has 8 divisors (see below), whose sum is σ = 41580504. Its totient is φ = 40147200.

The previous prime is 40860647. The next prime is 40860683. The reversal of 40860661 is 16606804.

It can be written as a sum of positive squares in 4 ways, for example, as 25060036 + 15800625 = 5006^2 + 3975^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40860661 - 2⁵ = 40860629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40860961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12361 + ... + 15313.

It is an arithmetic number, because the mean of its divisors is an integer number (5197563).

Almost surely, 2^40860661 is an apocalyptic number.

It is an amenable number.

40860661 is a deficient number, since it is larger than the sum of its proper divisors (719843).

40860661 is a wasteful number, since it uses less digits than its factorization.

40860661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40860661 is about 6392.2344293682. The cubic root of 40860661 is about 344.4306537393.

The spelling of 40860661 in words is "forty million, eight hundred sixty thousand, six hundred sixty-one".