70801945 has 4 divisors (see below), whose sum is σ = 84962340. Its totient is φ = 56641552.

The previous prime is 70801921. The next prime is 70801993. The reversal of 70801945 is 54910807.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54910807 = 7 ⋅7844401.

It can be written as a sum of positive squares in 2 ways, for example, as 36192256 + 34609689 = 6016^2 + 5883^2 .

It is a cyclic number.

It is not a de Polignac number, because 70801945 - 2⁷ = 70801817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70801945.

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, 7080190 + ... + 7080199.

It is an arithmetic number, because the mean of its divisors is an integer number (21240585).

Almost surely, 2^70801945 is an apocalyptic number.

It is an amenable number.

70801945 is a deficient number, since it is larger than the sum of its proper divisors (14160395).

70801945 is a wasteful number, since it uses less digits than its factorization.

70801945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14160394.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 70801945 is about 8414.3891638074. The cubic root of 70801945 is about 413.6963883646.

It can be divided in two parts, 7080 and 1945, that added together give a square (9025 = 95²).

The spelling of 70801945 in words is "seventy million, eight hundred one thousand, nine hundred forty-five".