70939937 has 2 divisors, whose sum is σ = 70939938. Its totient is φ = 70939936.

The previous prime is 70939877. The next prime is 70939949. The reversal of 70939937 is 73993907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66650896 + 4289041 = 8164^2 + 2071^2 .

It is a cyclic number.

It is not a de Polignac number, because 70939937 - 2⁸ = 70939681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70939891 and 70939900.

It is not a weakly prime, because it can be changed into another prime (70939987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35469968 + 35469969.

It is an arithmetic number, because the mean of its divisors is an integer number (35469969).

Almost surely, 2^70939937 is an apocalyptic number.

It is an amenable number.

70939937 is a deficient number, since it is larger than the sum of its proper divisors (1).

70939937 is an equidigital number, since it uses as much as digits as its factorization.

70939937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 321489, while the sum is 47.

The square root of 70939937 is about 8422.5849357546. The cubic root of 70939937 is about 413.9649767723.

The spelling of 70939937 in words is "seventy million, nine hundred thirty-nine thousand, nine hundred thirty-seven".