41645987 has 4 divisors (see below), whose sum is σ = 41740440. Its totient is φ = 41551536.

The previous prime is 41645983. The next prime is 41645993. The reversal of 41645987 is 78954614.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 41645987 - 2² = 41645983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41645983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46562 + ... + 47447.

It is an arithmetic number, because the mean of its divisors is an integer number (10435110).

Almost surely, 2^41645987 is an apocalyptic number.

41645987 is a deficient number, since it is larger than the sum of its proper divisors (94453).

41645987 is an equidigital number, since it uses as much as digits as its factorization.

41645987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94452.

The product of its digits is 241920, while the sum is 44.

The square root of 41645987 is about 6453.3702047845. The cubic root of 41645987 is about 346.6232737641.

The spelling of 41645987 in words is "forty-one million, six hundred forty-five thousand, nine hundred eighty-seven".