65072786 has 4 divisors (see below), whose sum is σ = 97609182. Its totient is φ = 32536392.

The previous prime is 65072783. The next prime is 65072797. The reversal of 65072786 is 68727056.

It is a happy number.

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., 65044225 + 28561 = 8065^2 + 169^2 .

It is not an unprimeable number, because it can be changed into a prime (65072783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16268195 + ... + 16268198.

Almost surely, 2^65072786 is an apocalyptic number.

65072786 is a deficient number, since it is larger than the sum of its proper divisors (32536396).

65072786 is a wasteful number, since it uses less digits than its factorization.

65072786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32536395.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 65072786 is about 8066.7704814256. The cubic root of 65072786 is about 402.2225981035. Note that the first 3 decimals are identical.

The spelling of 65072786 in words is "sixty-five million, seventy-two thousand, seven hundred eighty-six".