64620338 has 4 divisors (see below), whose sum is σ = 96930510. Its totient is φ = 32310168.

The previous prime is 64620329. The next prime is 64620343. The reversal of 64620338 is 83302646.

64620338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54361129 + 10259209 = 7373^2 + 3203^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16155083 + ... + 16155086.

Almost surely, 2^64620338 is an apocalyptic number.

64620338 is a deficient number, since it is larger than the sum of its proper divisors (32310172).

64620338 is a wasteful number, since it uses less digits than its factorization.

64620338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32310171.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 64620338 is about 8038.6776275703. The cubic root of 64620338 is about 401.2882176180.

The spelling of 64620338 in words is "sixty-four million, six hundred twenty thousand, three hundred thirty-eight".