69981648 has 40 divisors (see below), whose sum is σ = 197222496. Its totient is φ = 21206400.

The previous prime is 69981623. The next prime is 69981671. The reversal of 69981648 is 84618996.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 69981648.

It is a congruent 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, 65743 + ... + 66798.

Almost surely, 2^69981648 is an apocalyptic number.

It is an amenable number.

69981648 is an abundant number, since it is smaller than the sum of its proper divisors (127240848).

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

69981648 is a wasteful number, since it uses less digits than its factorization.

69981648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132563 (or 132557 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 69981648 is about 8365.5034516758. The cubic root of 69981648 is about 412.0925107244.

It can be divided in two parts, 6998 and 1648, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 69981648 in words is "sixty-nine million, nine hundred eighty-one thousand, six hundred forty-eight".