70688005 has 8 divisors (see below), whose sum is σ = 85029624. Its totient is φ = 56414400.

The previous prime is 70687979. The next prime is 70688021. The reversal of 70688005 is 50088607.

It can be written as a sum of positive squares in 4 ways, for example, as 10439361 + 60248644 = 3231^2 + 7762^2 .

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

It is not a de Polignac number, because 70688005 - 2⁹ = 70687493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14686 + ... + 18895.

It is an arithmetic number, because the mean of its divisors is an integer number (10628703).

Almost surely, 2^70688005 is an apocalyptic number.

It is an amenable number.

70688005 is a deficient number, since it is larger than the sum of its proper divisors (14341619).

70688005 is a wasteful number, since it uses less digits than its factorization.

70688005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34007.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 70688005 is about 8407.6158927487. The cubic root of 70688005 is about 413.4743517411.

The spelling of 70688005 in words is "seventy million, six hundred eighty-eight thousand, five".