64488397 has 4 divisors (see below), whose sum is σ = 64542016. Its totient is φ = 64434780.

The previous prime is 64488379. The next prime is 64488409. The reversal of 64488397 is 79388446.

64488397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64488397 - 2⁷ = 64488269 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64488397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64488317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24963 + ... + 27424.

It is an arithmetic number, because the mean of its divisors is an integer number (16135504).

Almost surely, 2^64488397 is an apocalyptic number.

It is an amenable number.

64488397 is a deficient number, since it is larger than the sum of its proper divisors (53619).

64488397 is a wasteful number, since it uses less digits than its factorization.

64488397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53618.

The product of its digits is 1161216, while the sum is 49.

The square root of 64488397 is about 8030.4667983873. The cubic root of 64488397 is about 401.0149164336.

Adding to 64488397 its sum of digits (49), we get a palindrome (64488446).

The spelling of 64488397 in words is "sixty-four million, four hundred eighty-eight thousand, three hundred ninety-seven".