65681050 has 12 divisors (see below), whose sum is σ = 122166846. Its totient is φ = 26272400.

The previous prime is 65681041. The next prime is 65681071. The reversal of 65681050 is 5018656.

It can be written as a sum of positive squares in 3 ways, for example, as 39803481 + 25877569 = 6309^2 + 5087^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 656761 + ... + 656860.

Almost surely, 2^65681050 is an apocalyptic number.

65681050 is a deficient number, since it is larger than the sum of its proper divisors (56485796).

65681050 is a wasteful number, since it uses less digits than its factorization.

65681050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313633 (or 1313628 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 65681050 is about 8104.3846157497. The cubic root of 65681050 is about 403.4719639719.

The spelling of 65681050 in words is "sixty-five million, six hundred eighty-one thousand, fifty".