64467231 has 4 divisors (see below), whose sum is σ = 85956312. Its totient is φ = 42978152.

The previous prime is 64467223. The next prime is 64467233. The reversal of 64467231 is 13276446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64467231 - 2³ = 64467223 is a prime.

It is a super-2 number, since 2×64467231² = 8312047745614722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64467192 and 64467201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64467233) 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, 10744536 + ... + 10744541.

It is an arithmetic number, because the mean of its divisors is an integer number (21489078).

Almost surely, 2^64467231 is an apocalyptic number.

64467231 is a deficient number, since it is larger than the sum of its proper divisors (21489081).

64467231 is a wasteful number, since it uses less digits than its factorization.

64467231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21489080.

The product of its digits is 24192, while the sum is 33.

The square root of 64467231 is about 8029.1488340919. The cubic root of 64467231 is about 400.9710387187.

The spelling of 64467231 in words is "sixty-four million, four hundred sixty-seven thousand, two hundred thirty-one".