72065122 has 8 divisors (see below), whose sum is σ = 111019356. Its totient is φ = 35058672.

The previous prime is 72065117. The next prime is 72065129. The reversal of 72065122 is 22156027.

It can be written as a sum of positive squares in 2 ways, for example, as 70744921 + 1320201 = 8411^2 + 1149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72065129) 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, 486853 + ... + 487000.

Almost surely, 2^72065122 is an apocalyptic number.

72065122 is a deficient number, since it is larger than the sum of its proper divisors (38954234).

72065122 is a wasteful number, since it uses less digits than its factorization.

72065122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973892.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 72065122 is about 8489.1178575869. The cubic root of 72065122 is about 416.1421520174.

The spelling of 72065122 in words is "seventy-two million, sixty-five thousand, one hundred twenty-two".