64451841 has 8 divisors (see below), whose sum is σ = 86081184. Its totient is φ = 42895200.

The previous prime is 64451839. The next prime is 64451843. The reversal of 64451841 is 14815446.

It is an interprime number because it is at equal distance from previous prime (64451839) and next prime (64451843).

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

It is not a de Polignac number, because 64451841 - 2¹ = 64451839 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64451843) 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, 16071 + ... + 19676.

It is an arithmetic number, because the mean of its divisors is an integer number (10760148).

Almost surely, 2^64451841 is an apocalyptic number.

It is an amenable number.

64451841 is a deficient number, since it is larger than the sum of its proper divisors (21629343).

64451841 is a wasteful number, since it uses less digits than its factorization.

64451841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36351.

The product of its digits is 15360, while the sum is 33.

The square root of 64451841 is about 8028.1903938559. The cubic root of 64451841 is about 400.9391287839.

The spelling of 64451841 in words is "sixty-four million, four hundred fifty-one thousand, eight hundred forty-one".