64209064 has 8 divisors (see below), whose sum is σ = 120392010. Its totient is φ = 32104528.

The previous prime is 64209007. The next prime is 64209073. The reversal of 64209064 is 46090246.

It can be written as a sum of positive squares in only one way, i.e., 53904964 + 10304100 = 7342^2 + 3210^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4013059 + ... + 4013074.

Almost surely, 2^64209064 is an apocalyptic number.

It is an amenable number.

64209064 is a deficient number, since it is larger than the sum of its proper divisors (56182946).

64209064 is a wasteful number, since it uses less digits than its factorization.

64209064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026139 (or 8026135 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 64209064 is about 8013.0558465544. The cubic root of 64209064 is about 400.4350765993.

The spelling of 64209064 in words is "sixty-four million, two hundred nine thousand, sixty-four".