70805023 has 4 divisors (see below), whose sum is σ = 73089088. Its totient is φ = 68520960.

The previous prime is 70804973. The next prime is 70805029. The reversal of 70805023 is 32050807.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70805023 - 2¹⁷ = 70673951 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 (70805029) 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 3 ways as a sum of consecutive naturals, for example, 1141986 + ... + 1142047.

It is an arithmetic number, because the mean of its divisors is an integer number (18272272).

Almost surely, 2^70805023 is an apocalyptic number.

70805023 is a deficient number, since it is larger than the sum of its proper divisors (2284065).

70805023 is a wasteful number, since it uses less digits than its factorization.

70805023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284064.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 70805023 is about 8414.5720627968. The cubic root of 70805023 is about 413.7023832047.

The spelling of 70805023 in words is "seventy million, eight hundred five thousand, twenty-three".