70744645 has 4 divisors (see below), whose sum is σ = 84893580. Its totient is φ = 56595712.

The previous prime is 70744637. The next prime is 70744649. The reversal of 70744645 is 54644707.

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 50951044 + 19793601 = 7138^2 + 4449^2 .

It is a cyclic number.

It is not a de Polignac number, because 70744645 - 2³ = 70744637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70744649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7074460 + ... + 7074469.

It is an arithmetic number, because the mean of its divisors is an integer number (21223395).

Almost surely, 2^70744645 is an apocalyptic number.

It is an amenable number.

70744645 is a deficient number, since it is larger than the sum of its proper divisors (14148935).

70744645 is a wasteful number, since it uses less digits than its factorization.

70744645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14148934.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 70744645 is about 8410.9835928980. The cubic root of 70744645 is about 413.5847567764.

The spelling of 70744645 in words is "seventy million, seven hundred forty-four thousand, six hundred forty-five".