64008609 has 16 divisors (see below), whose sum is σ = 101778432. Its totient is φ = 34985808.

The previous prime is 64008599. The next prime is 64008611. The reversal of 64008609 is 90680046.

It is not a de Polignac number, because 64008609 - 2⁸ = 64008353 is a prime.

It is a super-2 number, since 2×64008609² = 8194204052229762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64008609.

It is not an unprimeable number, because it can be changed into a prime (64008509) 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, 65779 + ... + 66744.

It is an arithmetic number, because the mean of its divisors is an integer number (6361152).

Almost surely, 2^64008609 is an apocalyptic number.

64008609 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

64008609 is a deficient number, since it is larger than the sum of its proper divisors (37769823).

64008609 is a wasteful number, since it uses less digits than its factorization.

64008609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132556.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 64008609 is about 8000.5380444068. The cubic root of 64008609 is about 400.0179346125.

The spelling of 64008609 in words is "sixty-four million, eight thousand, six hundred nine".