72061823 has 2 divisors, whose sum is σ = 72061824. Its totient is φ = 72061822.

The previous prime is 72061819. The next prime is 72061841. The reversal of 72061823 is 32816027.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72061823 - 2² = 72061819 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72061883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36030911 + 36030912.

It is an arithmetic number, because the mean of its divisors is an integer number (36030912).

Almost surely, 2^72061823 is an apocalyptic number.

72061823 is a deficient number, since it is larger than the sum of its proper divisors (1).

72061823 is an equidigital number, since it uses as much as digits as its factorization.

72061823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72061823 is about 8488.9235477768. The cubic root of 72061823 is about 416.1358018632.

The spelling of 72061823 in words is "seventy-two million, sixty-one thousand, eight hundred twenty-three".