72061879 has 2 divisors, whose sum is σ = 72061880. Its totient is φ = 72061878.

The previous prime is 72061841. The next prime is 72061883. The reversal of 72061879 is 97816027.

It is a strong prime.

It is an emirp because it is prime and its reverse (97816027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72061879 - 2²³ = 63673271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72061819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36030939 + 36030940.

It is an arithmetic number, because the mean of its divisors is an integer number (36030940).

Almost surely, 2^72061879 is an apocalyptic number.

72061879 is a deficient number, since it is larger than the sum of its proper divisors (1).

72061879 is an equidigital number, since it uses as much as digits as its factorization.

72061879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 72061879 is about 8488.9268461920. The cubic root of 72061879 is about 416.1359096576.

The spelling of 72061879 in words is "seventy-two million, sixty-one thousand, eight hundred seventy-nine".