64489427 has 2 divisors, whose sum is σ = 64489428. Its totient is φ = 64489426.

The previous prime is 64489391. The next prime is 64489429. The reversal of 64489427 is 72498446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64489427 - 2¹² = 64485331 is a prime.

Together with 64489429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64489429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32244713 + 32244714.

It is an arithmetic number, because the mean of its divisors is an integer number (32244714).

Almost surely, 2^64489427 is an apocalyptic number.

64489427 is a deficient number, since it is larger than the sum of its proper divisors (1).

64489427 is an equidigital number, since it uses as much as digits as its factorization.

64489427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 44.

The square root of 64489427 is about 8030.5309288988. The cubic root of 64489427 is about 401.0170514077.

The spelling of 64489427 in words is "sixty-four million, four hundred eighty-nine thousand, four hundred twenty-seven".