70785823 has 6 divisors (see below), whose sum is σ = 71559384. Its totient is φ = 70014024.

The previous prime is 70785787. The next prime is 70785833. The reversal of 70785823 is 32858707.

It is not a de Polignac number, because 70785823 - 2²⁵ = 37231391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70785833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84973 + ... + 85801.

It is an arithmetic number, because the mean of its divisors is an integer number (11926564).

Almost surely, 2^70785823 is an apocalyptic number.

70785823 is a deficient number, since it is larger than the sum of its proper divisors (773561).

70785823 is an frugal number, since it uses more digits than its factorization.

70785823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 70785823 is about 8413.4311074614. The cubic root of 70785823 is about 413.6649856516.

The spelling of 70785823 in words is "seventy million, seven hundred eighty-five thousand, eight hundred twenty-three".