70873723 has 2 divisors, whose sum is σ = 70873724. Its totient is φ = 70873722.

The previous prime is 70873717. The next prime is 70873753. The reversal of 70873723 is 32737807.

It is a weak prime.

It is an emirp because it is prime and its reverse (32737807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70873723 - 2²¹ = 68776571 is a prime.

It is a super-2 number, since 2×70873723² = 10046169223761458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70873753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35436861 + 35436862.

It is an arithmetic number, because the mean of its divisors is an integer number (35436862).

Almost surely, 2^70873723 is an apocalyptic number.

70873723 is a deficient number, since it is larger than the sum of its proper divisors (1).

70873723 is an equidigital number, since it uses as much as digits as its factorization.

70873723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 70873723 is about 8418.6532770984. The cubic root of 70873723 is about 413.8361409776.

The spelling of 70873723 in words is "seventy million, eight hundred seventy-three thousand, seven hundred twenty-three".