70087279 has 4 divisors (see below), whose sum is σ = 73134576. Its totient is φ = 67039984.

The previous prime is 70087267. The next prime is 70087289. The reversal of 70087279 is 97278007.

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 70087279 - 2¹¹ = 70085231 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 (70087289) 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, 1523614 + ... + 1523659.

It is an arithmetic number, because the mean of its divisors is an integer number (18283644).

Almost surely, 2^70087279 is an apocalyptic number.

70087279 is a deficient number, since it is larger than the sum of its proper divisors (3047297).

70087279 is a wasteful number, since it uses less digits than its factorization.

70087279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3047296.

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 70087279 is about 8371.8145583858. The cubic root of 70087279 is about 412.2997453456.

The spelling of 70087279 in words is "seventy million, eighty-seven thousand, two hundred seventy-nine".