70819643 has 2 divisors, whose sum is σ = 70819644. Its totient is φ = 70819642.

The previous prime is 70819627. The next prime is 70819649. The reversal of 70819643 is 34691807.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70819643 - 2⁴ = 70819627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70819597 and 70819606.

It is not a weakly prime, because it can be changed into another prime (70819649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35409821 + 35409822.

It is an arithmetic number, because the mean of its divisors is an integer number (35409822).

Almost surely, 2^70819643 is an apocalyptic number.

70819643 is a deficient number, since it is larger than the sum of its proper divisors (1).

70819643 is an equidigital number, since it uses as much as digits as its factorization.

70819643 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 38.

The square root of 70819643 is about 8415.4407490042. The cubic root of 70819643 is about 413.7308553495.

The spelling of 70819643 in words is "seventy million, eight hundred nineteen thousand, six hundred forty-three".