70973081 has 2 divisors, whose sum is σ = 70973082. Its totient is φ = 70973080.

The previous prime is 70973069. The next prime is 70973087. The reversal of 70973081 is 18037907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52345225 + 18627856 = 7235^2 + 4316^2 .

It is a cyclic number.

It is not a de Polignac number, because 70973081 - 2⁶ = 70973017 is a prime.

It is a super-2 number, since 2×70973081² = 10074356453265122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70973087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35486540 + 35486541.

It is an arithmetic number, because the mean of its divisors is an integer number (35486541).

Almost surely, 2^70973081 is an apocalyptic number.

It is an amenable number.

70973081 is a deficient number, since it is larger than the sum of its proper divisors (1).

70973081 is an equidigital number, since it uses as much as digits as its factorization.

70973081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 70973081 is about 8424.5522729698. The cubic root of 70973081 is about 414.0294365558.

The spelling of 70973081 in words is "seventy million, nine hundred seventy-three thousand, eighty-one".