65917228 has 24 divisors (see below), whose sum is σ = 131537952. Its totient is φ = 28633344.

The previous prime is 65917207. The next prime is 65917231. The reversal of 65917228 is 82271956.

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, 36400 + ... + 38167.

It is an arithmetic number, because the mean of its divisors is an integer number (5480748).

Almost surely, 2^65917228 is an apocalyptic number.

65917228 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

65917228 is a deficient number, since it is larger than the sum of its proper divisors (65620724).

65917228 is a wasteful number, since it uses less digits than its factorization.

65917228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74601 (or 74599 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 65917228 is about 8118.9425419817. The cubic root of 65917228 is about 403.9549912281.

The spelling of 65917228 in words is "sixty-five million, nine hundred seventeen thousand, two hundred twenty-eight".