70470073 has 4 divisors (see below), whose sum is σ = 70651620. Its totient is φ = 70288528.

The previous prime is 70470053. The next prime is 70470097. The reversal of 70470073 is 37007407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37007407 = 661 ⋅55987.

It can be written as a sum of positive squares in 2 ways, for example, as 25887744 + 44582329 = 5088^2 + 6677^2 .

It is a cyclic number.

It is not a de Polignac number, because 70470073 - 2⁵ = 70470041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70470053) 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, 90190 + ... + 90967.

It is an arithmetic number, because the mean of its divisors is an integer number (17662905).

Almost surely, 2^70470073 is an apocalyptic number.

It is an amenable number.

70470073 is a deficient number, since it is larger than the sum of its proper divisors (181547).

70470073 is a wasteful number, since it uses less digits than its factorization.

70470073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181546.

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 70470073 is about 8394.6454957908. The cubic root of 70470073 is about 413.0489987926.

The spelling of 70470073 in words is "seventy million, four hundred seventy thousand, seventy-three".