65481786 has 24 divisors (see below), whose sum is σ = 145713204. Its totient is φ = 21237120.

The previous prime is 65481751. The next prime is 65481817. The reversal of 65481786 is 68718456.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50851161 + 14630625 = 7131^2 + 3825^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48495 + ... + 49826.

Almost surely, 2^65481786 is an apocalyptic number.

65481786 is an abundant number, since it is smaller than the sum of its proper divisors (80231418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65481786 is a wasteful number, since it uses less digits than its factorization.

65481786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98366 (or 98363 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 65481786 is about 8092.0816852031. The cubic root of 65481786 is about 403.0635312082.

The spelling of 65481786 in words is "sixty-five million, four hundred eighty-one thousand, seven hundred eighty-six".