70549905 has 16 divisors (see below), whose sum is σ = 113091264. Its totient is φ = 37556160.

The previous prime is 70549903. The next prime is 70549933. The reversal of 70549905 is 50994507.

It is not a de Polignac number, because 70549905 - 2¹ = 70549903 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70549903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4447 + ... + 12683.

It is an arithmetic number, because the mean of its divisors is an integer number (7068204).

Almost surely, 2^70549905 is an apocalyptic number.

It is an amenable number.

70549905 is a deficient number, since it is larger than the sum of its proper divisors (42541359).

70549905 is a wasteful number, since it uses less digits than its factorization.

70549905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 70549905 is about 8399.3990856489. The cubic root of 70549905 is about 413.2049140740.

The spelling of 70549905 in words is "seventy million, five hundred forty-nine thousand, nine hundred five".