69960979 has 8 divisors (see below), whose sum is σ = 76628160. Its totient is φ = 63345000.

The previous prime is 69960977. The next prime is 69960991. The reversal of 69960979 is 97906996.

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 69960979 - 2¹ = 69960977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69960971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9909 + ... + 15430.

It is an arithmetic number, because the mean of its divisors is an integer number (9578520).

Almost surely, 2^69960979 is an apocalyptic number.

69960979 is a deficient number, since it is larger than the sum of its proper divisors (6667181).

69960979 is a wasteful number, since it uses less digits than its factorization.

69960979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25601.

The product of its (nonzero) digits is 1653372, while the sum is 55.

The square root of 69960979 is about 8364.2679894896. The cubic root of 69960979 is about 412.0519363785.

The spelling of 69960979 in words is "sixty-nine million, nine hundred sixty thousand, nine hundred seventy-nine".