70270513 has 4 divisors (see below), whose sum is σ = 70520868. Its totient is φ = 70020160.

The previous prime is 70270481. The next prime is 70270517. The reversal of 70270513 is 31507207.

70270513 = 5927² + 5928².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31507207 = 151 ⋅208657.

It can be written as a sum of positive squares in 2 ways, for example, as 35141184 + 35129329 = 5928^2 + 5927^2 .

It is a cyclic number.

It is not a de Polignac number, because 70270513 - 2⁵ = 70270481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70270517) 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, 124756 + ... + 125317.

It is an arithmetic number, because the mean of its divisors is an integer number (17630217).

Almost surely, 2^70270513 is an apocalyptic number.

70270513 is the 5928-th centered square number.

It is an amenable number.

70270513 is a deficient number, since it is larger than the sum of its proper divisors (250355).

70270513 is a wasteful number, since it uses less digits than its factorization.

70270513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250354.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 70270513 is about 8382.7509207897. The cubic root of 70270513 is about 412.6587338900.

The spelling of 70270513 in words is "seventy million, two hundred seventy thousand, five hundred thirteen".