72067237 has 12 divisors (see below), whose sum is σ = 80012268. Its totient is φ = 64856000.

The previous prime is 72067223. The next prime is 72067241. The reversal of 72067237 is 73276027.

It can be written as a sum of positive squares in 2 ways, for example, as 67881121 + 4186116 = 8239^2 + 2046^2 .

It is a de Polignac number, because none of the positive numbers 2^k-72067237 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 (72067297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9273 + ... + 15169.

It is an arithmetic number, because the mean of its divisors is an integer number (6667689).

Almost surely, 2^72067237 is an apocalyptic number.

It is an amenable number.

72067237 is a deficient number, since it is larger than the sum of its proper divisors (7945031).

72067237 is a wasteful number, since it uses less digits than its factorization.

72067237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6020 (or 6009 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 72067237 is about 8489.2424279202. The cubic root of 72067237 is about 416.1462230206.

The spelling of 72067237 in words is "seventy-two million, sixty-seven thousand, two hundred thirty-seven".