64665338 has 8 divisors (see below), whose sum is σ = 97040532. Its totient is φ = 32318496.

The previous prime is 64665329. The next prime is 64665347. The reversal of 64665338 is 83356646.

It is an interprime number because it is at equal distance from previous prime (64665329) and next prime (64665347).

It can be written as a sum of positive squares in 2 ways, for example, as 55011889 + 9653449 = 7417^2 + 3107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 64665295 and 64665304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56 + ... + 11372.

Almost surely, 2^64665338 is an apocalyptic number.

64665338 is a deficient number, since it is larger than the sum of its proper divisors (32375194).

64665338 is a wasteful number, since it uses less digits than its factorization.

64665338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14176.

The product of its digits is 311040, while the sum is 41.

The square root of 64665338 is about 8041.4761082776. The cubic root of 64665338 is about 401.3813450567.

The spelling of 64665338 in words is "sixty-four million, six hundred sixty-five thousand, three hundred thirty-eight".