70923445 has 8 divisors (see below), whose sum is σ = 85244760. Its totient is φ = 56647680.

The previous prime is 70923389. The next prime is 70923451. The reversal of 70923445 is 54432907.

It can be written as a sum of positive squares in 4 ways, for example, as 39853969 + 31069476 = 6313^2 + 5574^2 .

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

It is not a de Polignac number, because 70923445 - 2⁹ = 70922933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70923445.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 7860 + ... + 14269.

It is an arithmetic number, because the mean of its divisors is an integer number (10655595).

Almost surely, 2^70923445 is an apocalyptic number.

It is an amenable number.

70923445 is a deficient number, since it is larger than the sum of its proper divisors (14321315).

70923445 is a wasteful number, since it uses less digits than its factorization.

70923445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22775.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 70923445 is about 8421.6058444931. The cubic root of 70923445 is about 413.9328949868.

The spelling of 70923445 in words is "seventy million, nine hundred twenty-three thousand, four hundred forty-five".