70262813 has 4 divisors (see below), whose sum is σ = 70279740. Its totient is φ = 70245888.

The previous prime is 70262749. The next prime is 70262821. The reversal of 70262813 is 31826207.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31826207 = 7 ⋅4546601.

It can be written as a sum of positive squares in 2 ways, for example, as 52606009 + 17656804 = 7253^2 + 4202^2 .

It is a cyclic number.

It is not a de Polignac number, because 70262813 - 2⁶ = 70262749 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 (70262113) 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, 2483 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (17569935).

Almost surely, 2^70262813 is an apocalyptic number.

It is an amenable number.

70262813 is a deficient number, since it is larger than the sum of its proper divisors (16927).

70262813 is an equidigital number, since it uses as much as digits as its factorization.

70262813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16926.

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

The square root of 70262813 is about 8382.2916317675. The cubic root of 70262813 is about 412.6436607667.

The spelling of 70262813 in words is "seventy million, two hundred sixty-two thousand, eight hundred thirteen".