70863313 has 4 divisors (see below), whose sum is σ = 71659620. Its totient is φ = 70067008.

The previous prime is 70863311. The next prime is 70863319. The reversal of 70863313 is 31336807.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14493249 + 56370064 = 3807^2 + 7508^2 .

It is a cyclic number.

It is not a de Polignac number, because 70863313 - 2¹ = 70863311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70863311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398020 + ... + 398197.

It is an arithmetic number, because the mean of its divisors is an integer number (17914905).

Almost surely, 2^70863313 is an apocalyptic number.

It is an amenable number.

70863313 is a deficient number, since it is larger than the sum of its proper divisors (796307).

70863313 is an equidigital number, since it uses as much as digits as its factorization.

70863313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796306.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 70863313 is about 8418.0349844842. The cubic root of 70863313 is about 413.8158784365.

The spelling of 70863313 in words is "seventy million, eight hundred sixty-three thousand, three hundred thirteen".