64486489 has 2 divisors, whose sum is σ = 64486490. Its totient is φ = 64486488.

The previous prime is 64486447. The next prime is 64486493. The reversal of 64486489 is 98468446.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33872400 + 30614089 = 5820^2 + 5533^2 .

It is a cyclic number.

It is not a de Polignac number, because 64486489 - 2¹⁹ = 63962201 is a prime.

It is not a weakly prime, because it can be changed into another prime (64486189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32243244 + 32243245.

It is an arithmetic number, because the mean of its divisors is an integer number (32243245).

Almost surely, 2^64486489 is an apocalyptic number.

It is an amenable number.

64486489 is a deficient number, since it is larger than the sum of its proper divisors (1).

64486489 is an equidigital number, since it uses as much as digits as its factorization.

64486489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 49.

The square root of 64486489 is about 8030.3479999313. The cubic root of 64486489 is about 401.0109614896.

The spelling of 64486489 in words is "sixty-four million, four hundred eighty-six thousand, four hundred eighty-nine".