64446271 has 4 divisors (see below), whose sum is σ = 67838200. Its totient is φ = 61054344.

The previous prime is 64446257. The next prime is 64446281. The reversal of 64446271 is 17264446.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17264446 = 2 ⋅8632223.

It is a cyclic number.

It is not a de Polignac number, because 64446271 - 2¹³ = 64438079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64446211) 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, 1695936 + ... + 1695973.

It is an arithmetic number, because the mean of its divisors is an integer number (16959550).

Almost surely, 2^64446271 is an apocalyptic number.

64446271 is a deficient number, since it is larger than the sum of its proper divisors (3391929).

64446271 is a wasteful number, since it uses less digits than its factorization.

64446271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391928.

The product of its digits is 32256, while the sum is 34.

The square root of 64446271 is about 8027.8434837757. The cubic root of 64446271 is about 400.9275785822.

The spelling of 64446271 in words is "sixty-four million, four hundred forty-six thousand, two hundred seventy-one".