70681165 has 8 divisors (see below), whose sum is σ = 84870648. Its totient is φ = 56509440.

The previous prime is 70681157. The next prime is 70681183. The reversal of 70681165 is 56118607.

It can be written as a sum of positive squares in 4 ways, for example, as 70756 + 70610409 = 266^2 + 8403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70681165 - 2³ = 70681157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70681165.

It is a congruent number.

It is an unprimeable number.

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, 7009 + ... + 13801.

It is an arithmetic number, because the mean of its divisors is an integer number (10608831).

Almost surely, 2^70681165 is an apocalyptic number.

It is an amenable number.

70681165 is a deficient number, since it is larger than the sum of its proper divisors (14189483).

70681165 is a wasteful number, since it uses less digits than its factorization.

70681165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8879.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 70681165 is about 8407.2091088541. The cubic root of 70681165 is about 413.4610149391.

The spelling of 70681165 in words is "seventy million, six hundred eighty-one thousand, one hundred sixty-five".