70873937 has 2 divisors, whose sum is σ = 70873938. Its totient is φ = 70873936.

The previous prime is 70873921. The next prime is 70873951. The reversal of 70873937 is 73937807.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67305616 + 3568321 = 8204^2 + 1889^2 .

It is an emirp because it is prime and its reverse (73937807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70873937 - 2⁴ = 70873921 is a prime.

It is a super-2 number, since 2×70873937² = 10046229891759938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70873997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35436968 + 35436969.

It is an arithmetic number, because the mean of its divisors is an integer number (35436969).

Almost surely, 2^70873937 is an apocalyptic number.

It is an amenable number.

70873937 is a deficient number, since it is larger than the sum of its proper divisors (1).

70873937 is an equidigital number, since it uses as much as digits as its factorization.

70873937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 70873937 is about 8418.6659869602. The cubic root of 70873937 is about 413.8365574970.

The spelling of 70873937 in words is "seventy million, eight hundred seventy-three thousand, nine hundred thirty-seven".