72437086 has 4 divisors (see below), whose sum is σ = 108655632. Its totient is φ = 36218542.

The previous prime is 72437077. The next prime is 72437089. The reversal of 72437086 is 68073427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68073427 = 31 ⋅2195917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72437089) 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 as a sum of consecutive naturals, namely, 18109270 + ... + 18109273.

It is an arithmetic number, because the mean of its divisors is an integer number (27163908).

Almost surely, 2^72437086 is an apocalyptic number.

72437086 is a deficient number, since it is larger than the sum of its proper divisors (36218546).

72437086 is a wasteful number, since it uses less digits than its factorization.

72437086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36218545.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 72437086 is about 8510.9979438371. The cubic root of 72437086 is about 416.8568960353.

The spelling of 72437086 in words is "seventy-two million, four hundred thirty-seven thousand, eighty-six".