64543748 has 6 divisors (see below), whose sum is σ = 112951566. Its totient is φ = 32271872.

The previous prime is 64543729. The next prime is 64543769. The reversal of 64543748 is 84734546.

It can be written as a sum of positive squares in only one way, i.e., 61748164 + 2795584 = 7858^2 + 1672^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8067965 + ... + 8067972.

It is an arithmetic number, because the mean of its divisors is an integer number (18825261).

Almost surely, 2^64543748 is an apocalyptic number.

It is an amenable number.

64543748 is a deficient number, since it is larger than the sum of its proper divisors (48407818).

64543748 is a wasteful number, since it uses less digits than its factorization.

64543748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16135941 (or 16135939 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

The square root of 64543748 is about 8033.9123719393. The cubic root of 64543748 is about 401.1296152538.

The spelling of 64543748 in words is "sixty-four million, five hundred forty-three thousand, seven hundred forty-eight".