64423471 has 16 divisors (see below), whose sum is σ = 80179200. Its totient is φ = 50506848.

The previous prime is 64423459. The next prime is 64423477. The reversal of 64423471 is 17432446.

It is not a de Polignac number, because 64423471 - 2⁵ = 64423439 is a prime.

It is a super-3 number, since 3×64423471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64423477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4495 + ... + 12208.

It is an arithmetic number, because the mean of its divisors is an integer number (5011200).

Almost surely, 2^64423471 is an apocalyptic number.

64423471 is a deficient number, since it is larger than the sum of its proper divisors (15755729).

64423471 is a wasteful number, since it uses less digits than its factorization.

64423471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16758.

The product of its digits is 16128, while the sum is 31.

The square root of 64423471 is about 8026.4233005742. The cubic root of 64423471 is about 400.8802925415.

Subtracting from 64423471 its reverse (17432446), we obtain a square (46991025 = 6855²).

The spelling of 64423471 in words is "sixty-four million, four hundred twenty-three thousand, four hundred seventy-one".