64422727 has 4 divisors (see below), whose sum is σ = 64439080. Its totient is φ = 64406376.

The previous prime is 64422697. The next prime is 64422733. The reversal of 64422727 is 72722446.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 72722446 = 2 ⋅36361223.

It is a cyclic number.

It is not a de Polignac number, because 64422727 - 2¹¹ = 64420679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64422692 and 64422701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64422737) 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, 1753 + ... + 11485.

It is an arithmetic number, because the mean of its divisors is an integer number (16109770).

Almost surely, 2^64422727 is an apocalyptic number.

64422727 is a deficient number, since it is larger than the sum of its proper divisors (16353).

64422727 is an equidigital number, since it uses as much as digits as its factorization.

64422727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16352.

The product of its digits is 37632, while the sum is 34.

The square root of 64422727 is about 8026.3769535202. The cubic root of 64422727 is about 400.8787493353.

The spelling of 64422727 in words is "sixty-four million, four hundred twenty-two thousand, seven hundred twenty-seven".