70740305 has 4 divisors (see below), whose sum is σ = 84888372. Its totient is φ = 56592240.

The previous prime is 70740301. The next prime is 70740317. The reversal of 70740305 is 50304707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50304707 = 71 ⋅708517.

It can be written as a sum of positive squares in 2 ways, for example, as 9634816 + 61105489 = 3104^2 + 7817^2 .

It is not a de Polignac number, because 70740305 - 2² = 70740301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70740301) 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, 7074026 + ... + 7074035.

It is an arithmetic number, because the mean of its divisors is an integer number (21222093).

Almost surely, 2^70740305 is an apocalyptic number.

It is an amenable number.

70740305 is a deficient number, since it is larger than the sum of its proper divisors (14148067).

70740305 is a wasteful number, since it uses less digits than its factorization.

70740305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14148066.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 70740305 is about 8410.7255929557. The cubic root of 70740305 is about 413.5762991537.

The spelling of 70740305 in words is "seventy million, seven hundred forty thousand, three hundred five".