65166772 has 24 divisors (see below), whose sum is σ = 124679520. Its totient is φ = 29556960.

The previous prime is 65166767. The next prime is 65166791. The reversal of 65166772 is 27766156.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23179 + ... + 25837.

It is an arithmetic number, because the mean of its divisors is an integer number (5194980).

Almost surely, 2^65166772 is an apocalyptic number.

It is an amenable number.

65166772 is a deficient number, since it is larger than the sum of its proper divisors (59512748).

65166772 is a wasteful number, since it uses less digits than its factorization.

65166772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231 (or 3229 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 65166772 is about 8072.5938830094. The cubic root of 65166772 is about 402.4161511487.

The spelling of 65166772 in words is "sixty-five million, one hundred sixty-six thousand, seven hundred seventy-two".