70787137 has 2 divisors, whose sum is σ = 70787138. Its totient is φ = 70787136.

The previous prime is 70787089. The next prime is 70787147. The reversal of 70787137 is 73178707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49617936 + 21169201 = 7044^2 + 4601^2 .

It is a cyclic number.

It is not a de Polignac number, because 70787137 - 2¹⁹ = 70262849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70787137.

It is not a weakly prime, because it can be changed into another prime (70787147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35393568 + 35393569.

It is an arithmetic number, because the mean of its divisors is an integer number (35393569).

Almost surely, 2^70787137 is an apocalyptic number.

It is an amenable number.

70787137 is a deficient number, since it is larger than the sum of its proper divisors (1).

70787137 is an equidigital number, since it uses as much as digits as its factorization.

70787137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57624, while the sum is 40.

The square root of 70787137 is about 8413.5091965244. The cubic root of 70787137 is about 413.6675452622.

The spelling of 70787137 in words is "seventy million, seven hundred eighty-seven thousand, one hundred thirty-seven".