70718737 has 2 divisors, whose sum is σ = 70718738. Its totient is φ = 70718736.

The previous prime is 70718717. The next prime is 70718749. The reversal of 70718737 is 73781707.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66520336 + 4198401 = 8156^2 + 2049^2 .

It is a cyclic number.

It is not a de Polignac number, because 70718737 - 2²³ = 62330129 is a prime.

It is a super-2 number, since 2×70718737² = 10002279525750338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70718737.

It is not a weakly prime, because it can be changed into another prime (70718707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35359368 + 35359369.

It is an arithmetic number, because the mean of its divisors is an integer number (35359369).

Almost surely, 2^70718737 is an apocalyptic number.

It is an amenable number.

70718737 is a deficient number, since it is larger than the sum of its proper divisors (1).

70718737 is an equidigital number, since it uses as much as digits as its factorization.

70718737 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 70718737 is about 8409.4433228365. The cubic root of 70718737 is about 413.5342631446.

The spelling of 70718737 in words is "seventy million, seven hundred eighteen thousand, seven hundred thirty-seven".