64460231 has 16 divisors (see below), whose sum is σ = 71971200. Its totient is φ = 57240480.

The previous prime is 64460213. The next prime is 64460257. The reversal of 64460231 is 13206446.

It is not a de Polignac number, because 64460231 - 2⁶ = 64460167 is a prime.

It is a super-2 number, since 2×64460231² = 8310242761146722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64460231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64460131) 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 15 ways as a sum of consecutive naturals, for example, 109520 + ... + 110106.

It is an arithmetic number, because the mean of its divisors is an integer number (4498200).

Almost surely, 2^64460231 is an apocalyptic number.

64460231 is a deficient number, since it is larger than the sum of its proper divisors (7510969).

64460231 is a wasteful number, since it uses less digits than its factorization.

64460231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 64460231 is about 8028.7129105480. The cubic root of 64460231 is about 400.9565254079.

Adding to 64460231 its reverse (13206446), we get a palindrome (77666677).

The spelling of 64460231 in words is "sixty-four million, four hundred sixty thousand, two hundred thirty-one".