69972287 has 8 divisors (see below), whose sum is σ = 87238272. Its totient is φ = 54523800.

The previous prime is 69972263. The next prime is 69972299. The reversal of 69972287 is 78227996.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 69972287 - 2¹⁰ = 69971263 is a prime.

It is a super-2 number, since 2×69972287² = 9792241896020738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69972257) 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, 454289 + ... + 454442.

It is an arithmetic number, because the mean of its divisors is an integer number (10904784).

Almost surely, 2^69972287 is an apocalyptic number.

69972287 is a deficient number, since it is larger than the sum of its proper divisors (17265985).

69972287 is a wasteful number, since it uses less digits than its factorization.

69972287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908749.

The product of its digits is 762048, while the sum is 50.

The square root of 69972287 is about 8364.9439328665. The cubic root of 69972287 is about 412.0741355736.

The spelling of 69972287 in words is "sixty-nine million, nine hundred seventy-two thousand, two hundred eighty-seven".