70617 has 4 divisors (see below), whose sum is σ = 94160. Its totient is φ = 47076.

The previous prime is 70607. The next prime is 70619. The reversal of 70617 is 71607.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71607 = 3 ⋅23869.

It is not a de Polignac number, because 70617 - 2⁷ = 70489 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70593 and 70602.

It is not an unprimeable number, because it can be changed into a prime (70619) 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, 11767 + ... + 11772.

It is an arithmetic number, because the mean of its divisors is an integer number (23540).

2⁷⁰⁶¹⁷ is an apocalyptic number.

It is an amenable number.

70617 is a deficient number, since it is larger than the sum of its proper divisors (23543).

70617 is a wasteful number, since it uses less digits than its factorization.

70617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23542.

The product of its (nonzero) digits is 294, while the sum is 21.

The square root of 70617 is about 265.7385933582. The cubic root of 70617 is about 41.3335862512. Note that the first 3 decimals are identical.

Subtracting 70617 from its reverse (71607), we obtain a triangular number (990 = T₄₄).

The spelling of 70617 in words is "seventy thousand, six hundred seventeen".