64006394 has 8 divisors (see below), whose sum is σ = 101657268. Its totient is φ = 30120640.

The previous prime is 64006357. The next prime is 64006441. The reversal of 64006394 is 49360046.

It can be written as a sum of positive squares in 2 ways, for example, as 63600625 + 405769 = 7975^2 + 637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 64006394.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941237 + ... + 941304.

Almost surely, 2^64006394 is an apocalyptic number.

64006394 is a deficient number, since it is larger than the sum of its proper divisors (37650874).

64006394 is a wasteful number, since it uses less digits than its factorization.

64006394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882560.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 64006394 is about 8000.3996150192. The cubic root of 64006394 is about 400.0133203897.

The spelling of 64006394 in words is "sixty-four million, six thousand, three hundred ninety-four".