69520479 has 16 divisors (see below), whose sum is σ = 106191360. Its totient is φ = 39630240.

The previous prime is 69520459. The next prime is 69520489. The reversal of 69520479 is 97402596.

It is not a de Polignac number, because 69520479 - 2¹¹ = 69518431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69520479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69520439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5449 + ... + 12989.

It is an arithmetic number, because the mean of its divisors is an integer number (6636960).

Almost surely, 2^69520479 is an apocalyptic number.

69520479 is a deficient number, since it is larger than the sum of its proper divisors (36670881).

69520479 is a wasteful number, since it uses less digits than its factorization.

69520479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7990.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 69520479 is about 8337.8941585990. The cubic root of 69520479 is about 411.1853048763.

The spelling of 69520479 in words is "sixty-nine million, five hundred twenty thousand, four hundred seventy-nine".