70812263 has 4 divisors (see below), whose sum is σ = 71782368. Its totient is φ = 69842160.

The previous prime is 70812251. The next prime is 70812311. The reversal of 70812263 is 36221807.

It is a happy number.

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 70812263 - 2⁶ = 70812199 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 (70812223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484943 + ... + 485088.

It is an arithmetic number, because the mean of its divisors is an integer number (17945592).

Almost surely, 2^70812263 is an apocalyptic number.

70812263 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

70812263 is a deficient number, since it is larger than the sum of its proper divisors (970105).

70812263 is an equidigital number, since it uses as much as digits as its factorization.

70812263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970104.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 70812263 is about 8415.0022578725. The cubic root of 70812263 is about 413.7164834434.

The spelling of 70812263 in words is "seventy million, eight hundred twelve thousand, two hundred sixty-three".