72786037 has 4 divisors (see below), whose sum is σ = 73783180. Its totient is φ = 71788896.

The previous prime is 72786031. The next prime is 72786071. The reversal of 72786037 is 73068727.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49688401 + 23097636 = 7049^2 + 4806^2 .

It is a cyclic number.

It is not a de Polignac number, because 72786037 - 2¹¹ = 72783989 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 (72786031) 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, 498462 + ... + 498607.

It is an arithmetic number, because the mean of its divisors is an integer number (18445795).

Almost surely, 2^72786037 is an apocalyptic number.

It is an amenable number.

72786037 is a deficient number, since it is larger than the sum of its proper divisors (997143).

72786037 is an equidigital number, since it uses as much as digits as its factorization.

72786037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997142.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 72786037 is about 8531.4733194214. The cubic root of 72786037 is about 417.5251986177.

The spelling of 72786037 in words is "seventy-two million, seven hundred eighty-six thousand, thirty-seven".