72916061 has 4 divisors (see below), whose sum is σ = 75268224. Its totient is φ = 70563900.

The previous prime is 72916057. The next prime is 72916087. The reversal of 72916061 is 16061927.

It is a happy number.

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 not a de Polignac number, because 72916061 - 2² = 72916057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72916001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176035 + ... + 1176096.

It is an arithmetic number, because the mean of its divisors is an integer number (18817056).

Almost surely, 2^72916061 is an apocalyptic number.

It is an amenable number.

72916061 is a deficient number, since it is larger than the sum of its proper divisors (2352163).

72916061 is a wasteful number, since it uses less digits than its factorization.

72916061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352162.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 72916061 is about 8539.0901740174. The cubic root of 72916061 is about 417.7736711915.

Adding to 72916061 its reverse (16061927), we get a palindrome (88977988).

The spelling of 72916061 in words is "seventy-two million, nine hundred sixteen thousand, sixty-one".