64401241 has 4 divisors (see below), whose sum is σ = 67790800. Its totient is φ = 61011684.

The previous prime is 64401221. The next prime is 64401247. The reversal of 64401241 is 14210446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14210446 = 2 ⋅7105223.

It is a cyclic number.

It is not a de Polignac number, because 64401241 - 2⁹ = 64400729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64401247) 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, 1694751 + ... + 1694788.

It is an arithmetic number, because the mean of its divisors is an integer number (16947700).

Almost surely, 2^64401241 is an apocalyptic number.

It is an amenable number.

64401241 is a deficient number, since it is larger than the sum of its proper divisors (3389559).

64401241 is a wasteful number, since it uses less digits than its factorization.

64401241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389558.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 64401241 is about 8025.0383799705. The cubic root of 64401241 is about 400.8341779087.

Adding to 64401241 its reverse (14210446), we get a palindrome (78611687).

The spelling of 64401241 in words is "sixty-four million, four hundred one thousand, two hundred forty-one".