65320172 has 6 divisors (see below), whose sum is σ = 114310308. Its totient is φ = 32660084.

The previous prime is 65320169. The next prime is 65320217. The reversal of 65320172 is 27102356.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8165018 + ... + 8165025.

It is an arithmetic number, because the mean of its divisors is an integer number (19051718).

Almost surely, 2^65320172 is an apocalyptic number.

It is an amenable number.

65320172 is a deficient number, since it is larger than the sum of its proper divisors (48990136).

65320172 is a wasteful number, since it uses less digits than its factorization.

65320172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16330047 (or 16330045 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 65320172 is about 8082.0895812902. The cubic root of 65320172 is about 402.7316609388.

The spelling of 65320172 in words is "sixty-five million, three hundred twenty thousand, one hundred seventy-two".