70851073 has 4 divisors (see below), whose sum is σ = 72012628. Its totient is φ = 69689520.

The previous prime is 70851061. The next prime is 70851091. The reversal of 70851073 is 37015807.

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 2093809 + 68757264 = 1447^2 + 8292^2 .

It is a cyclic number.

It is not a de Polignac number, because 70851073 - 2⁹ = 70850561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70851173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580686 + ... + 580807.

It is an arithmetic number, because the mean of its divisors is an integer number (18003157).

Almost surely, 2^70851073 is an apocalyptic number.

It is an amenable number.

70851073 is a deficient number, since it is larger than the sum of its proper divisors (1161555).

70851073 is a wasteful number, since it uses less digits than its factorization.

70851073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161554.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 70851073 is about 8417.3079425669. The cubic root of 70851073 is about 413.7920513540.

The spelling of 70851073 in words is "seventy million, eight hundred fifty-one thousand, seventy-three".