70412513 has 4 divisors (see below), whose sum is σ = 70433220. Its totient is φ = 70391808.

The previous prime is 70412497. The next prime is 70412549. The reversal of 70412513 is 31521407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31521407 = 401 ⋅78607.

It can be written as a sum of positive squares in 2 ways, for example, as 44930209 + 25482304 = 6703^2 + 5048^2 .

It is a cyclic number.

It is not a de Polignac number, because 70412513 - 2⁴ = 70412497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70412593) 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, 3920 + ... + 12497.

It is an arithmetic number, because the mean of its divisors is an integer number (17608305).

Almost surely, 2^70412513 is an apocalyptic number.

It is an amenable number.

70412513 is a deficient number, since it is larger than the sum of its proper divisors (20707).

70412513 is a wasteful number, since it uses less digits than its factorization.

70412513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20706.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 70412513 is about 8391.2164195664. The cubic root of 70412513 is about 412.9365085990.

The spelling of 70412513 in words is "seventy million, four hundred twelve thousand, five hundred thirteen".