70732873 has 4 divisors (see below), whose sum is σ = 70860420. Its totient is φ = 70605328.

The previous prime is 70732867. The next prime is 70732891. The reversal of 70732873 is 37823707.

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 32626944 + 38105929 = 5712^2 + 6173^2 .

It is a cyclic number.

It is not a de Polignac number, because 70732873 - 2²⁵ = 37178441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70732853) 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, 62938 + ... + 64051.

It is an arithmetic number, because the mean of its divisors is an integer number (17715105).

Almost surely, 2^70732873 is an apocalyptic number.

It is an amenable number.

70732873 is a deficient number, since it is larger than the sum of its proper divisors (127547).

70732873 is a wasteful number, since it uses less digits than its factorization.

70732873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127546.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 70732873 is about 8410.2837645349. The cubic root of 70732873 is about 413.5618151585.

The spelling of 70732873 in words is "seventy million, seven hundred thirty-two thousand, eight hundred seventy-three".