65938646 has 4 divisors (see below), whose sum is σ = 98907972. Its totient is φ = 32969322.

The previous prime is 65938633. The next prime is 65938667. The reversal of 65938646 is 64683956.

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

It is a self number, because there is not a number n which added to its sum of digits gives 65938646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16484660 + ... + 16484663.

It is an arithmetic number, because the mean of its divisors is an integer number (24726993).

Almost surely, 2^65938646 is an apocalyptic number.

65938646 is a deficient number, since it is larger than the sum of its proper divisors (32969326).

65938646 is a wasteful number, since it uses less digits than its factorization.

65938646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32969325.

The product of its digits is 933120, while the sum is 47.

The square root of 65938646 is about 8120.2614489929. The cubic root of 65938646 is about 403.9987378649.

The spelling of 65938646 in words is "sixty-five million, nine hundred thirty-eight thousand, six hundred forty-six".