72994061 has 4 divisors (see below), whose sum is σ = 83421792. Its totient is φ = 62566332.

The previous prime is 72994049. The next prime is 72994069. The reversal of 72994061 is 16049927.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16049927 = 19 ⋅844733.

It is a cyclic number.

It is not a de Polignac number, because 72994061 - 2¹⁴ = 72977677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72994069) 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, 5213855 + ... + 5213868.

It is an arithmetic number, because the mean of its divisors is an integer number (20855448).

Almost surely, 2^72994061 is an apocalyptic number.

It is an amenable number.

72994061 is a deficient number, since it is larger than the sum of its proper divisors (10427731).

72994061 is a wasteful number, since it uses less digits than its factorization.

72994061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10427730.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 72994061 is about 8543.6561845617. The cubic root of 72994061 is about 417.9225854972.

The spelling of 72994061 in words is "seventy-two million, nine hundred ninety-four thousand, sixty-one".