70477145 has 4 divisors (see below), whose sum is σ = 84572580. Its totient is φ = 56381712.

The previous prime is 70477139. The next prime is 70477153. The reversal of 70477145 is 54177407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54177407 = 269 ⋅201403.

It can be written as a sum of positive squares in 2 ways, for example, as 45954841 + 24522304 = 6779^2 + 4952^2 .

It is a cyclic number.

It is not a de Polignac number, because 70477145 - 2¹⁰ = 70476121 is a prime.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 7047710 + ... + 7047719.

It is an arithmetic number, because the mean of its divisors is an integer number (21143145).

Almost surely, 2^70477145 is an apocalyptic number.

It is an amenable number.

70477145 is a deficient number, since it is larger than the sum of its proper divisors (14095435).

70477145 is a wasteful number, since it uses less digits than its factorization.

70477145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14095434.

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 70477145 is about 8395.0667061078. The cubic root of 70477145 is about 413.0628154607.

The spelling of 70477145 in words is "seventy million, four hundred seventy-seven thousand, one hundred forty-five".