64216427 has 8 divisors (see below), whose sum is σ = 70120512. Its totient is φ = 58323400.

The previous prime is 64216403. The next prime is 64216433. The reversal of 64216427 is 72461246.

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 64216427 - 2⁶ = 64216363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64216393 and 64216402.

It is not an unprimeable number, because it can be changed into a prime (64216457) 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, 13652 + ... + 17742.

It is an arithmetic number, because the mean of its divisors is an integer number (8765064).

Almost surely, 2^64216427 is an apocalyptic number.

64216427 is a deficient number, since it is larger than the sum of its proper divisors (5904085).

64216427 is a wasteful number, since it uses less digits than its factorization.

64216427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529.

The product of its digits is 16128, while the sum is 32.

The square root of 64216427 is about 8013.5152710905. The cubic root of 64216427 is about 400.4503822825.

The spelling of 64216427 in words is "sixty-four million, two hundred sixteen thousand, four hundred twenty-seven".