64489937 has 2 divisors, whose sum is σ = 64489938. Its totient is φ = 64489936.

The previous prime is 64489903. The next prime is 64489949. The reversal of 64489937 is 73998446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49505296 + 14984641 = 7036^2 + 3871^2 .

It is a cyclic number.

It is not a de Polignac number, because 64489937 - 2¹⁰ = 64488913 is a prime.

It is not a weakly prime, because it can be changed into another prime (64486937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32244968 + 32244969.

It is an arithmetic number, because the mean of its divisors is an integer number (32244969).

Almost surely, 2^64489937 is an apocalyptic number.

It is an amenable number.

64489937 is a deficient number, since it is larger than the sum of its proper divisors (1).

64489937 is an equidigital number, since it uses as much as digits as its factorization.

64489937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 64489937 is about 8030.5626826518. The cubic root of 64489937 is about 401.0181085224.

The spelling of 64489937 in words is "sixty-four million, four hundred eighty-nine thousand, nine hundred thirty-seven".