69808973 has 8 divisors (see below), whose sum is σ = 77211288. Its totient is φ = 62697024.

The previous prime is 69808967. The next prime is 69809023. The reversal of 69808973 is 37980896.

It can be written as a sum of positive squares in 4 ways, for example, as 4571044 + 65237929 = 2138^2 + 8077^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69808973 - 2¹⁰ = 69807949 is a prime.

It is a super-2 number, since 2×69808973² = 9746585422629458, 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 (69808913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72086 + ... + 73047.

It is an arithmetic number, because the mean of its divisors is an integer number (9651411).

Almost surely, 2^69808973 is an apocalyptic number.

It is an amenable number.

69808973 is a deficient number, since it is larger than the sum of its proper divisors (7402315).

69808973 is a wasteful number, since it uses less digits than its factorization.

69808973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145183.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 69808973 is about 8355.1764194420. The cubic root of 69808973 is about 411.7532947414.

The spelling of 69808973 in words is "sixty-nine million, eight hundred eight thousand, nine hundred seventy-three".