64040006 has 16 divisors (see below), whose sum is σ = 98545248. Its totient is φ = 31200000.

The previous prime is 64039999. The next prime is 64040021. The reversal of 64040006 is 60004046.

It is a super-2 number, since 2×64040006² = 8202244736960072, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64040006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14006 + ... + 18006.

It is an arithmetic number, because the mean of its divisors is an integer number (6159078).

Almost surely, 2^64040006 is an apocalyptic number.

It is a pronic number, being equal to 8002×8003.

64040006 is a deficient number, since it is larger than the sum of its proper divisors (34505242).

64040006 is a wasteful number, since it uses less digits than its factorization.

64040006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4207.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 64040006 is about 8002.4999843799. The cubic root of 64040006 is about 400.0833284730.

The spelling of 64040006 in words is "sixty-four million, forty thousand, six", and thus it is an eban number.