64940041 has 8 divisors (see below), whose sum is σ = 66495744. Its totient is φ = 63391680.

The previous prime is 64940039. The next prime is 64940059. The reversal of 64940041 is 14004946.

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 64940041 - 2¹ = 64940039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64939991 and 64940009.

It is not an unprimeable number, because it can be changed into a prime (64940021) 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, 18756 + ... + 21946.

It is an arithmetic number, because the mean of its divisors is an integer number (8311968).

It is a Poulet number, since it divides 2^64940040-1.

Almost surely, 2^64940041 is an apocalyptic number.

It is an amenable number.

64940041 is a deficient number, since it is larger than the sum of its proper divisors (1555703).

64940041 is a wasteful number, since it uses less digits than its factorization.

64940041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 64940041 is about 8058.5383910483. The cubic root of 64940041 is about 401.9489077250.

Adding to 64940041 its reverse (14004946), we get a palindrome (78944987).

The spelling of 64940041 in words is "sixty-four million, nine hundred forty thousand, forty-one".