64864427 has 8 divisors (see below), whose sum is σ = 65537472. Its totient is φ = 64195200.

The previous prime is 64864351. The next prime is 64864433. The reversal of 64864427 is 72446846.

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 64864427 - 2¹⁶ = 64798891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64864477) 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, 42878 + ... + 44364.

It is an arithmetic number, because the mean of its divisors is an integer number (8192184).

Almost surely, 2^64864427 is an apocalyptic number.

64864427 is a deficient number, since it is larger than the sum of its proper divisors (673045).

64864427 is a wasteful number, since it uses less digits than its factorization.

64864427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909.

The product of its digits is 258048, while the sum is 41.

The square root of 64864427 is about 8053.8454790243. The cubic root of 64864427 is about 401.7928418728.

The spelling of 64864427 in words is "sixty-four million, eight hundred sixty-four thousand, four hundred twenty-seven".