64000099 has 4 divisors (see below), whose sum is σ = 66782736. Its totient is φ = 61217464.

The previous prime is 64000091. The next prime is 64000109. The reversal of 64000099 is 99000046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99000046 = 2 ⋅49500023.

It is a cyclic number.

It is not a de Polignac number, because 64000099 - 2³ = 64000091 is a prime.

It is a Duffinian number.

64000099 is a modest number, since divided by 99 gives 64 as remainder.

It is not an unprimeable number, because it can be changed into a prime (64000091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391284 + ... + 1391329.

It is an arithmetic number, because the mean of its divisors is an integer number (16695684).

Almost surely, 2^64000099 is an apocalyptic number.

64000099 is a deficient number, since it is larger than the sum of its proper divisors (2782637).

64000099 is a wasteful number, since it uses less digits than its factorization.

64000099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782636.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 64000099 is about 8000.0061874976. The cubic root of 64000099 is about 400.0002062499. Note that the first 3 decimals are identical.

The spelling of 64000099 in words is "sixty-four million, ninety-nine", and thus it is an aban number.