65000073 has 4 divisors (see below), whose sum is σ = 86666768. Its totient is φ = 43333380.

The previous prime is 65000071. The next prime is 65000081. The reversal of 65000073 is 37000056.

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 not a de Polignac number, because 65000073 - 2¹ = 65000071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65000071) 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, 10833343 + ... + 10833348.

It is an arithmetic number, because the mean of its divisors is an integer number (21666692).

Almost surely, 2^65000073 is an apocalyptic number.

It is an amenable number.

65000073 is a deficient number, since it is larger than the sum of its proper divisors (21666695).

65000073 is a wasteful number, since it uses less digits than its factorization.

65000073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21666694.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 65000073 is about 8062.2622755651. The cubic root of 65000073 is about 402.0727263783.

The spelling of 65000073 in words is "sixty-five million, seventy-three", and thus it is an aban number and an uban number.