70993289 has 2 divisors, whose sum is σ = 70993290. Its totient is φ = 70993288.

The previous prime is 70993259. The next prime is 70993333. The reversal of 70993289 is 98239907.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65885689 + 5107600 = 8117^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 70993289 - 2²⁰ = 69944713 is a prime.

It is not a weakly prime, because it can be changed into another prime (70993259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35496644 + 35496645.

It is an arithmetic number, because the mean of its divisors is an integer number (35496645).

Almost surely, 2^70993289 is an apocalyptic number.

It is an amenable number.

70993289 is a deficient number, since it is larger than the sum of its proper divisors (1).

70993289 is an equidigital number, since it uses as much as digits as its factorization.

70993289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 70993289 is about 8425.7515391803. The cubic root of 70993289 is about 414.0687280392.

The spelling of 70993289 in words is "seventy million, nine hundred ninety-three thousand, two hundred eighty-nine".