69742985 has 8 divisors (see below), whose sum is σ = 90129480. Its totient is φ = 51502464.

The previous prime is 69742979. The next prime is 69742987. The reversal of 69742985 is 58924796.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3857296 + 65885689 = 1964^2 + 8117^2 .

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

It is not a de Polignac number, because 69742985 - 2¹⁰ = 69741961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69742987) 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, 536420 + ... + 536549.

It is an arithmetic number, because the mean of its divisors is an integer number (11266185).

Almost surely, 2^69742985 is an apocalyptic number.

69742985 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

69742985 is a deficient number, since it is larger than the sum of its proper divisors (20386495).

69742985 is a wasteful number, since it uses less digits than its factorization.

69742985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072987.

The product of its digits is 1088640, while the sum is 50.

The square root of 69742985 is about 8351.2265566203. The cubic root of 69742985 is about 411.6235151398.

The spelling of 69742985 in words is "sixty-nine million, seven hundred forty-two thousand, nine hundred eighty-five".