69997536 has 72 divisors (see below), whose sum is σ = 227498544. Its totient is φ = 19998720.

The previous prime is 69997531. The next prime is 69997559. The reversal of 69997536 is 63579996.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69997531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15345 + ... + 19376.

It is an arithmetic number, because the mean of its divisors is an integer number (3159702).

Almost surely, 2^69997536 is an apocalyptic number.

It is an amenable number.

69997536 is an abundant number, since it is smaller than the sum of its proper divisors (157501008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69997536 is a wasteful number, since it uses less digits than its factorization.

69997536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34744 (or 34733 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 54.

The square root of 69997536 is about 8366.4530118802. The cubic root of 69997536 is about 412.1236942827.

It can be divided in two parts, 6999 and 7536, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 69997536 in words is "sixty-nine million, nine hundred ninety-seven thousand, five hundred thirty-six".