70544905 has 4 divisors (see below), whose sum is σ = 84653892. Its totient is φ = 56435920.

The previous prime is 70544857. The next prime is 70544911. The reversal of 70544905 is 50944507.

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 41525136 + 29019769 = 6444^2 + 5387^2 .

It is not a de Polignac number, because 70544905 - 2¹⁹ = 70020617 is a prime.

It is a Duffinian number.

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, 7054486 + ... + 7054495.

It is an arithmetic number, because the mean of its divisors is an integer number (21163473).

Almost surely, 2^70544905 is an apocalyptic number.

It is an amenable number.

70544905 is a deficient number, since it is larger than the sum of its proper divisors (14108987).

70544905 is a wasteful number, since it uses less digits than its factorization.

70544905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14108986.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 70544905 is about 8399.1014400351. The cubic root of 70544905 is about 413.1951523156.

The spelling of 70544905 in words is "seventy million, five hundred forty-four thousand, nine hundred five".