70823399 has 2 divisors, whose sum is σ = 70823400. Its totient is φ = 70823398.

The previous prime is 70823387. The next prime is 70823443. The reversal of 70823399 is 99332807.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70823399 - 2¹² = 70819303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70823329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35411699 + 35411700.

It is an arithmetic number, because the mean of its divisors is an integer number (35411700).

Almost surely, 2^70823399 is an apocalyptic number.

70823399 is a deficient number, since it is larger than the sum of its proper divisors (1).

70823399 is an equidigital number, since it uses as much as digits as its factorization.

70823399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 70823399 is about 8415.6639072625. The cubic root of 70823399 is about 413.7381694484.

The spelling of 70823399 in words is "seventy million, eight hundred twenty-three thousand, three hundred ninety-nine".