64600427 has 4 divisors (see below), whose sum is σ = 64846320. Its totient is φ = 64354536.

The previous prime is 64600421. The next prime is 64600451. The reversal of 64600427 is 72400646.

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 64600427 - 2⁴ = 64600411 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 64600427.

It is not an unprimeable number, because it can be changed into a prime (64600421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122552 + ... + 123077.

It is an arithmetic number, because the mean of its divisors is an integer number (16211580).

Almost surely, 2^64600427 is an apocalyptic number.

64600427 is a deficient number, since it is larger than the sum of its proper divisors (245893).

64600427 is a wasteful number, since it uses less digits than its factorization.

64600427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245892.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 64600427 is about 8037.4390821953. The cubic root of 64600427 is about 401.2469980333.

The spelling of 64600427 in words is "sixty-four million, six hundred thousand, four hundred twenty-seven".