65550766 has 4 divisors (see below), whose sum is σ = 98326152. Its totient is φ = 32775382.

The previous prime is 65550743. The next prime is 65550773. The reversal of 65550766 is 66705556.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 16387690 + ... + 16387693.

It is an arithmetic number, because the mean of its divisors is an integer number (24581538).

Almost surely, 2^65550766 is an apocalyptic number.

65550766 is a deficient number, since it is larger than the sum of its proper divisors (32775386).

65550766 is a wasteful number, since it uses less digits than its factorization.

65550766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32775385.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 65550766 is about 8096.3427546022. The cubic root of 65550766 is about 403.2050136310.

The spelling of 65550766 in words is "sixty-five million, five hundred fifty thousand, seven hundred sixty-six".