65617073 has 4 divisors (see below), whose sum is σ = 65640960. Its totient is φ = 65593188.

The previous prime is 65617063. The next prime is 65617103. The reversal of 65617073 is 37071656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65617073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65617033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7193 + ... + 13526.

It is an arithmetic number, because the mean of its divisors is an integer number (16410240).

Almost surely, 2^65617073 is an apocalyptic number.

It is an amenable number.

65617073 is a deficient number, since it is larger than the sum of its proper divisors (23887).

65617073 is a wasteful number, since it uses less digits than its factorization.

65617073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23886.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 65617073 is about 8100.4365931720. The cubic root of 65617073 is about 403.3409200282.

The spelling of 65617073 in words is "sixty-five million, six hundred seventeen thousand, seventy-three".