70702321 has 2 divisors, whose sum is σ = 70702322. Its totient is φ = 70702320.

The previous prime is 70702309. The next prime is 70702339. The reversal of 70702321 is 12320707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41152225 + 29550096 = 6415^2 + 5436^2 .

It is a cyclic number.

It is not a de Polignac number, because 70702321 - 2⁷ = 70702193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70702292 and 70702301.

It is not a weakly prime, because it can be changed into another prime (70702361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35351160 + 35351161.

It is an arithmetic number, because the mean of its divisors is an integer number (35351161).

Almost surely, 2^70702321 is an apocalyptic number.

It is an amenable number.

70702321 is a deficient number, since it is larger than the sum of its proper divisors (1).

70702321 is an equidigital number, since it uses as much as digits as its factorization.

70702321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 70702321 is about 8408.4672206057. The cubic root of 70702321 is about 413.5022626494.

The spelling of 70702321 in words is "seventy million, seven hundred two thousand, three hundred twenty-one".