64427537 has 8 divisors (see below), whose sum is σ = 68748960. Its totient is φ = 60199200.

The previous prime is 64427533. The next prime is 64427549. The reversal of 64427537 is 73572446.

64427537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 64427537 - 2² = 64427533 is a prime.

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 64427537.

It is not an unprimeable number, because it can be changed into a prime (64427533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21839 + ... + 24612.

It is an arithmetic number, because the mean of its divisors is an integer number (8593620).

Almost surely, 2^64427537 is an apocalyptic number.

It is an amenable number.

64427537 is a deficient number, since it is larger than the sum of its proper divisors (4321423).

64427537 is a wasteful number, since it uses less digits than its factorization.

64427537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46543.

The product of its digits is 141120, while the sum is 38.

The square root of 64427537 is about 8026.6765849883. The cubic root of 64427537 is about 400.8887260360. Note that the first 3 decimals are identical.

The spelling of 64427537 in words is "sixty-four million, four hundred twenty-seven thousand, five hundred thirty-seven".