69987379 has 8 divisors (see below), whose sum is σ = 87257088. Its totient is φ = 54535560.

The previous prime is 69987377. The next prime is 69987383. The reversal of 69987379 is 97378996.

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 69987379 - 2¹ = 69987377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69987377) 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, 454387 + ... + 454540.

It is an arithmetic number, because the mean of its divisors is an integer number (10907136).

Almost surely, 2^69987379 is an apocalyptic number.

69987379 is a deficient number, since it is larger than the sum of its proper divisors (17269709).

69987379 is a wasteful number, since it uses less digits than its factorization.

69987379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908945.

The product of its digits is 5143824, while the sum is 58.

The square root of 69987379 is about 8365.8459823260. The cubic root of 69987379 is about 412.1037595674.

The spelling of 69987379 in words is "sixty-nine million, nine hundred eighty-seven thousand, three hundred seventy-nine".