64208387 has 8 divisors (see below), whose sum is σ = 68265504. Its totient is φ = 60256768.

The previous prime is 64208383. The next prime is 64208413. The reversal of 64208387 is 78380246.

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

It is a cyclic number.

It is not a de Polignac number, because 64208387 - 2² = 64208383 is a prime.

It is a super-2 number, since 2×64208387² = 8245433922283538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64208387.

It is not an unprimeable number, because it can be changed into a prime (64208381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25118 + ... + 27555.

It is an arithmetic number, because the mean of its divisors is an integer number (8533188).

Almost surely, 2^64208387 is an apocalyptic number.

64208387 is a deficient number, since it is larger than the sum of its proper divisors (4057117).

64208387 is a wasteful number, since it uses less digits than its factorization.

64208387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52749.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 64208387 is about 8013.0136028837. The cubic root of 64208387 is about 400.4336692409.

The spelling of 64208387 in words is "sixty-four million, two hundred eight thousand, three hundred eighty-seven".