64146431 has 2 divisors, whose sum is σ = 64146432. Its totient is φ = 64146430.

The previous prime is 64146421. The next prime is 64146469. The reversal of 64146431 is 13464146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64146431 - 2¹⁰ = 64145407 is a prime.

It is a super-2 number, since 2×64146431² = 8229529220075522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64146394 and 64146403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64146421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32073215 + 32073216.

It is an arithmetic number, because the mean of its divisors is an integer number (32073216).

Almost surely, 2^64146431 is an apocalyptic number.

64146431 is a deficient number, since it is larger than the sum of its proper divisors (1).

64146431 is an equidigital number, since it uses as much as digits as its factorization.

64146431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 64146431 is about 8009.1467086076. The cubic root of 64146431 is about 400.3048322176.

The spelling of 64146431 in words is "sixty-four million, one hundred forty-six thousand, four hundred thirty-one".