64207427 has 4 divisors (see below), whose sum is σ = 64262976. Its totient is φ = 64151880.

The previous prime is 64207411. The next prime is 64207439. The reversal of 64207427 is 72470246.

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 64207427 - 2⁴ = 64207411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64207393 and 64207402.

It is not an unprimeable number, because it can be changed into a prime (64207457) 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, 26003 + ... + 28364.

It is an arithmetic number, because the mean of its divisors is an integer number (16065744).

Almost surely, 2^64207427 is an apocalyptic number.

64207427 is a deficient number, since it is larger than the sum of its proper divisors (55549).

64207427 is a wasteful number, since it uses less digits than its factorization.

64207427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55548.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 64207427 is about 8012.9537001034. The cubic root of 64207427 is about 400.4316735606.

The spelling of 64207427 in words is "sixty-four million, two hundred seven thousand, four hundred twenty-seven".