64042408 has 8 divisors (see below), whose sum is σ = 120079530. Its totient is φ = 32021200.

The previous prime is 64042403. The next prime is 64042409. The reversal of 64042408 is 80424046.

64042408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 64032004 + 10404 = 8002^2 + 102^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (64042403) 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 as a sum of consecutive naturals, namely, 4002643 + ... + 4002658.

Almost surely, 2^64042408 is an apocalyptic number.

It is an amenable number.

64042408 is a deficient number, since it is larger than the sum of its proper divisors (56037122).

64042408 is a wasteful number, since it uses less digits than its factorization.

64042408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8005307 (or 8005303 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 64042408 is about 8002.6500610735. The cubic root of 64042408 is about 400.0883304929.

The spelling of 64042408 in words is "sixty-four million, forty-two thousand, four hundred eight".