70321517 has 8 divisors (see below), whose sum is σ = 82008000. Its totient is φ = 60275292.

The previous prime is 70321487. The next prime is 70321523. The reversal of 70321517 is 71512307.

It is not a de Polignac number, because 70321517 - 2¹⁴ = 70305133 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 (70321597) 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 7 ways as a sum of consecutive naturals, for example, 102167 + ... + 102852.

It is an arithmetic number, because the mean of its divisors is an integer number (10251000).

Almost surely, 2^70321517 is an apocalyptic number.

It is an amenable number.

70321517 is a deficient number, since it is larger than the sum of its proper divisors (11686483).

70321517 is an equidigital number, since it uses as much as digits as its factorization.

70321517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205040 (or 205026 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 70321517 is about 8385.7925683861. The cubic root of 70321517 is about 412.7585489002.

The spelling of 70321517 in words is "seventy million, three hundred twenty-one thousand, five hundred seventeen".