69897747 has 12 divisors (see below), whose sum is σ = 95422344. Its totient is φ = 45511200.

The previous prime is 69897739. The next prime is 69897769. The reversal of 69897747 is 74779896.

It is not a de Polignac number, because 69897747 - 2³ = 69897739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69897797) 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 11 ways as a sum of consecutive naturals, for example, 754 + ... + 11847.

It is an arithmetic number, because the mean of its divisors is an integer number (7951862).

Almost surely, 2^69897747 is an apocalyptic number.

69897747 is a deficient number, since it is larger than the sum of its proper divisors (25524597).

69897747 is a wasteful number, since it uses less digits than its factorization.

69897747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12690 (or 12647 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 57.

The square root of 69897747 is about 8360.4872465664. The cubic root of 69897747 is about 411.9277589585.

The spelling of 69897747 in words is "sixty-nine million, eight hundred ninety-seven thousand, seven hundred forty-seven".