64431041 has 4 divisors (see below), whose sum is σ = 65313732. Its totient is φ = 63548352.

The previous prime is 64430983. The next prime is 64431043. The reversal of 64431041 is 14013446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14013446 = 2 ⋅7006723.

It can be written as a sum of positive squares in 2 ways, for example, as 23726641 + 40704400 = 4871^2 + 6380^2 .

It is a cyclic number.

It is not a de Polignac number, because 64431041 - 2¹⁴ = 64414657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64430998 and 64431016.

It is not an unprimeable number, because it can be changed into a prime (64431043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441236 + ... + 441381.

It is an arithmetic number, because the mean of its divisors is an integer number (16328433).

Almost surely, 2^64431041 is an apocalyptic number.

It is an amenable number.

64431041 is a deficient number, since it is larger than the sum of its proper divisors (882691).

64431041 is an equidigital number, since it uses as much as digits as its factorization.

64431041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882690.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 64431041 is about 8026.8948541762. The cubic root of 64431041 is about 400.8959935736.

Adding to 64431041 its reverse (14013446), we get a palindrome (78444487).

The spelling of 64431041 in words is "sixty-four million, four hundred thirty-one thousand, forty-one".