64737489 has 8 divisors (see below), whose sum is σ = 88324192. Its totient is φ = 42154560.

The previous prime is 64737487. The next prime is 64737499. The reversal of 64737489 is 98473746.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64737489 - 2¹ = 64737487 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64737487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250792 + ... + 251049.

It is an arithmetic number, because the mean of its divisors is an integer number (11040524).

Almost surely, 2^64737489 is an apocalyptic number.

It is an amenable number.

64737489 is a deficient number, since it is larger than the sum of its proper divisors (23586703).

64737489 is a wasteful number, since it uses less digits than its factorization.

64737489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501887.

The product of its digits is 1016064, while the sum is 48.

The square root of 64737489 is about 8045.9610364456. The cubic root of 64737489 is about 401.5305713252.

The spelling of 64737489 in words is "sixty-four million, seven hundred thirty-seven thousand, four hundred eighty-nine".