64954489 has 2 divisors, whose sum is σ = 64954490. Its totient is φ = 64954488.

The previous prime is 64954481. The next prime is 64954493. The reversal of 64954489 is 98445946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62536464 + 2418025 = 7908^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 64954489 - 2³ = 64954481 is a prime.

It is a super-2 number, since 2×64954489² = 8438171282502242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64954481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32477244 + 32477245.

It is an arithmetic number, because the mean of its divisors is an integer number (32477245).

Almost surely, 2^64954489 is an apocalyptic number.

It is an amenable number.

64954489 is a deficient number, since it is larger than the sum of its proper divisors (1).

64954489 is an equidigital number, since it uses as much as digits as its factorization.

64954489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 49.

The square root of 64954489 is about 8059.4347816705. The cubic root of 64954489 is about 401.9787143338.

The spelling of 64954489 in words is "sixty-four million, nine hundred fifty-four thousand, four hundred eighty-nine".