70779223 has 2 divisors, whose sum is σ = 70779224. Its totient is φ = 70779222.

The previous prime is 70779209. The next prime is 70779229. The reversal of 70779223 is 32297707.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70779223 - 2⁹ = 70778711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70779229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35389611 + 35389612.

It is an arithmetic number, because the mean of its divisors is an integer number (35389612).

Almost surely, 2^70779223 is an apocalyptic number.

70779223 is a deficient number, since it is larger than the sum of its proper divisors (1).

70779223 is an equidigital number, since it uses as much as digits as its factorization.

70779223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 70779223 is about 8413.0388683281. The cubic root of 70779223 is about 413.6521286808.

The spelling of 70779223 in words is "seventy million, seven hundred seventy-nine thousand, two hundred twenty-three".