70742345 has 4 divisors (see below), whose sum is σ = 84890820. Its totient is φ = 56593872.

The previous prime is 70742323. The next prime is 70742351. The reversal of 70742345 is 54324707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54324707 = 17 ⋅3195571.

It can be written as a sum of positive squares in 2 ways, for example, as 12418576 + 58323769 = 3524^2 + 7637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70742345 is a prime.

It is an unprimeable number.

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, 7074230 + ... + 7074239.

It is an arithmetic number, because the mean of its divisors is an integer number (21222705).

Almost surely, 2^70742345 is an apocalyptic number.

It is an amenable number.

70742345 is a deficient number, since it is larger than the sum of its proper divisors (14148475).

70742345 is a wasteful number, since it uses less digits than its factorization.

70742345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14148474.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 70742345 is about 8410.8468658037. The cubic root of 70742345 is about 413.5802746692.

The spelling of 70742345 in words is "seventy million, seven hundred forty-two thousand, three hundred forty-five".