64918229 has 4 divisors (see below), whose sum is σ = 65413920. Its totient is φ = 64422540.

The previous prime is 64918187. The next prime is 64918237. The reversal of 64918229 is 92281946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92281946 = 2 ⋅46140973.

It is a cyclic number.

It is not a de Polignac number, because 64918229 - 2⁸ = 64917973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64918279) 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, 247649 + ... + 247910.

It is an arithmetic number, because the mean of its divisors is an integer number (16353480).

Almost surely, 2^64918229 is an apocalyptic number.

It is an amenable number.

64918229 is a deficient number, since it is larger than the sum of its proper divisors (495691).

64918229 is a wasteful number, since it uses less digits than its factorization.

64918229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495690.

The product of its digits is 62208, while the sum is 41.

The square root of 64918229 is about 8057.1849302346. The cubic root of 64918229 is about 401.9039006117.

The spelling of 64918229 in words is "sixty-four million, nine hundred eighteen thousand, two hundred twenty-nine".