69726985 has 8 divisors (see below), whose sum is σ = 83922696. Its totient is φ = 55614720.

The previous prime is 69726949. The next prime is 69727001. The reversal of 69726985 is 58962796.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4052169 + 65674816 = 2013^2 + 8104^2 .

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

It is not a de Polignac number, because 69726985 - 2⁷ = 69726857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19006 + ... + 22375.

It is an arithmetic number, because the mean of its divisors is an integer number (10490337).

Almost surely, 2^69726985 is an apocalyptic number.

It is an amenable number.

69726985 is a deficient number, since it is larger than the sum of its proper divisors (14195711).

69726985 is a wasteful number, since it uses less digits than its factorization.

69726985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41723.

The product of its digits is 1632960, while the sum is 52.

The square root of 69726985 is about 8350.2685585555. The cubic root of 69726985 is about 411.5920353671.

The spelling of 69726985 in words is "sixty-nine million, seven hundred twenty-six thousand, nine hundred eighty-five".