70017697 has 4 divisors (see below), whose sum is σ = 70672176. Its totient is φ = 69363220.

The previous prime is 70017683. The next prime is 70017707. The reversal of 70017697 is 79671007.

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: 79671007 = 13 ⋅6128539.

It is a cyclic number.

It is not a de Polignac number, because 70017697 - 2¹⁹ = 69493409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70017617) 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, 327079 + ... + 327292.

It is an arithmetic number, because the mean of its divisors is an integer number (17668044).

Almost surely, 2^70017697 is an apocalyptic number.

It is an amenable number.

70017697 is a deficient number, since it is larger than the sum of its proper divisors (654479).

70017697 is a wasteful number, since it uses less digits than its factorization.

70017697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654478.

The product of its (nonzero) digits is 18522, while the sum is 37.

The square root of 70017697 is about 8367.6577965402. The cubic root of 70017697 is about 412.1632577144.

The spelling of 70017697 in words is "seventy million, seventeen thousand, six hundred ninety-seven".