64087638 has 8 divisors (see below), whose sum is σ = 128175288. Its totient is φ = 21362544.

The previous prime is 64087601. The next prime is 64087643. The reversal of 64087638 is 83678046.

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

64087638 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 64087638.

It is a congruent number.

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, 5340631 + ... + 5340642.

It is an arithmetic number, because the mean of its divisors is an integer number (16021911).

Almost surely, 2^64087638 is an apocalyptic number.

64087638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64087638 is a wasteful number, since it uses less digits than its factorization.

64087638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10681278.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 64087638 is about 8005.4755011804. The cubic root of 64087638 is about 400.1824958921.

The spelling of 64087638 in words is "sixty-four million, eighty-seven thousand, six hundred thirty-eight".