70628329 has 2 divisors, whose sum is σ = 70628330. Its totient is φ = 70628328.

The previous prime is 70628321. The next prime is 70628333. The reversal of 70628329 is 92382607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61465600 + 9162729 = 7840^2 + 3027^2 .

It is a cyclic number.

It is not a de Polignac number, because 70628329 - 2³ = 70628321 is a prime.

It is not a weakly prime, because it can be changed into another prime (70628321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35314164 + 35314165.

It is an arithmetic number, because the mean of its divisors is an integer number (35314165).

Almost surely, 2^70628329 is an apocalyptic number.

It is an amenable number.

70628329 is a deficient number, since it is larger than the sum of its proper divisors (1).

70628329 is an equidigital number, since it uses as much as digits as its factorization.

70628329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 70628329 is about 8404.0662182065. The cubic root of 70628329 is about 413.3579649878.

The spelling of 70628329 in words is "seventy million, six hundred twenty-eight thousand, three hundred twenty-nine".