70561717 has 4 divisors (see below), whose sum is σ = 71555616. Its totient is φ = 69567820.

The previous prime is 70561681. The next prime is 70561721. The reversal of 70561717 is 71716507.

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.

It is a cyclic number.

It is not a de Polignac number, because 70561717 - 2¹⁵ = 70528949 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 (70561417) 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, 496843 + ... + 496984.

It is an arithmetic number, because the mean of its divisors is an integer number (17888904).

Almost surely, 2^70561717 is an apocalyptic number.

It is an amenable number.

70561717 is a deficient number, since it is larger than the sum of its proper divisors (993899).

70561717 is an equidigital number, since it uses as much as digits as its factorization.

70561717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993898.

The product of its (nonzero) digits is 10290, while the sum is 34.

The square root of 70561717 is about 8400.1022017592. The cubic root of 70561717 is about 413.2279734203.

The spelling of 70561717 in words is "seventy million, five hundred sixty-one thousand, seven hundred seventeen".