70440717 has 4 divisors (see below), whose sum is σ = 93920960. Its totient is φ = 46960476.

The previous prime is 70440703. The next prime is 70440731. The reversal of 70440717 is 71704407.

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: 71704407 = 3 ⋅23901469.

It is an interprime number because it is at equal distance from previous prime (70440703) and next prime (70440731).

It is not a de Polignac number, because 70440717 - 2¹⁵ = 70407949 is a prime.

It is a super-2 number, since 2×70440717² = 9923789222948178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70440757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11740117 + ... + 11740122.

It is an arithmetic number, because the mean of its divisors is an integer number (23480240).

Almost surely, 2^70440717 is an apocalyptic number.

It is an amenable number.

70440717 is a deficient number, since it is larger than the sum of its proper divisors (23480243).

70440717 is a wasteful number, since it uses less digits than its factorization.

70440717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23480242.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 70440717 is about 8392.8968181433. The cubic root of 70440717 is about 412.9916356691.

The spelling of 70440717 in words is "seventy million, four hundred forty thousand, seven hundred seventeen".