64488447 has 16 divisors (see below), whose sum is σ = 98122080. Its totient is φ = 41829696.

The previous prime is 64488409. The next prime is 64488469. The reversal of 64488447 is 74488446.

It is not a de Polignac number, because 64488447 - 2¹⁵ = 64455679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64488847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31278 + ... + 33275.

It is an arithmetic number, because the mean of its divisors is an integer number (6132630).

Almost surely, 2^64488447 is an apocalyptic number.

64488447 is a deficient number, since it is larger than the sum of its proper divisors (33633633).

64488447 is a wasteful number, since it uses less digits than its factorization.

64488447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64599 (or 64593 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 64488447 is about 8030.4699115307. The cubic root of 64488447 is about 401.0150200737.

Subtracting 64488447 from its reverse (74488446), we obtain a palindrome (9999999).

The spelling of 64488447 in words is "sixty-four million, four hundred eighty-eight thousand, four hundred forty-seven".