72077983 has 2 divisors, whose sum is σ = 72077984. Its totient is φ = 72077982.

The previous prime is 72077981. The next prime is 72077987. The reversal of 72077983 is 38977027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72077983 - 2¹ = 72077981 is a prime.

Together with 72077981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72077981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36038991 + 36038992.

It is an arithmetic number, because the mean of its divisors is an integer number (36038992).

Almost surely, 2^72077983 is an apocalyptic number.

72077983 is a deficient number, since it is larger than the sum of its proper divisors (1).

72077983 is an equidigital number, since it uses as much as digits as its factorization.

72077983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 72077983 is about 8489.8753229950. The cubic root of 72077983 is about 416.1669059516.

The spelling of 72077983 in words is "seventy-two million, seventy-seven thousand, nine hundred eighty-three".