70144573 has 4 divisors (see below), whose sum is σ = 70211260. Its totient is φ = 70077888.

The previous prime is 70144541. The next prime is 70144583. The reversal of 70144573 is 37544107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37544107 = 2039 ⋅18413.

It can be written as a sum of positive squares in 2 ways, for example, as 57198969 + 12945604 = 7563^2 + 3598^2 .

It is a cyclic number.

It is not a de Polignac number, because 70144573 - 2⁵ = 70144541 is a prime.

It is a super-2 number, since 2×70144573² = 9840522242704658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70144583) by changing a digit.

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, 31740 + ... + 33877.

It is an arithmetic number, because the mean of its divisors is an integer number (17552815).

Almost surely, 2^70144573 is an apocalyptic number.

It is an amenable number.

70144573 is a deficient number, since it is larger than the sum of its proper divisors (66687).

70144573 is a wasteful number, since it uses less digits than its factorization.

70144573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66686.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 70144573 is about 8375.2356981759. The cubic root of 70144573 is about 412.4120618176.

The spelling of 70144573 in words is "seventy million, one hundred forty-four thousand, five hundred seventy-three".