64242427 has 4 divisors (see below), whose sum is σ = 67035600. Its totient is φ = 61449256.

The previous prime is 64242419. The next prime is 64242443. The reversal of 64242427 is 72424246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64242427 - 2³ = 64242419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64242457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396552 + ... + 1396597.

It is an arithmetic number, because the mean of its divisors is an integer number (16758900).

Almost surely, 2^64242427 is an apocalyptic number.

64242427 is a deficient number, since it is larger than the sum of its proper divisors (2793173).

64242427 is a wasteful number, since it uses less digits than its factorization.

64242427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793172.

The product of its digits is 21504, while the sum is 31.

The square root of 64242427 is about 8015.1373662589. The cubic root of 64242427 is about 400.5044198841.

The spelling of 64242427 in words is "sixty-four million, two hundred forty-two thousand, four hundred twenty-seven".