70660705 has 4 divisors (see below), whose sum is σ = 84792852. Its totient is φ = 56528560.

The previous prime is 70660699. The next prime is 70660729. The reversal of 70660705 is 50706607.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23970816 + 46689889 = 4896^2 + 6833^2 .

It is not a de Polignac number, because 70660705 - 2⁵ = 70660673 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 7066066 + ... + 7066075.

It is an arithmetic number, because the mean of its divisors is an integer number (21198213).

Almost surely, 2^70660705 is an apocalyptic number.

It is an amenable number.

70660705 is a deficient number, since it is larger than the sum of its proper divisors (14132147).

70660705 is a wasteful number, since it uses less digits than its factorization.

70660705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14132146.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 70660705 is about 8405.9922079431. The cubic root of 70660705 is about 413.4211163855.

The spelling of 70660705 in words is "seventy million, six hundred sixty thousand, seven hundred five".