69983980 has 60 divisors (see below), whose sum is σ = 162338400. Its totient is φ = 25342240.

The previous prime is 69983941. The next prime is 69984017. The reversal of 69983980 is 8938996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 292701 + ... + 292939.

It is an arithmetic number, because the mean of its divisors is an integer number (2705640).

Almost surely, 2^69983980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69983980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81169200).

69983980 is an abundant number, since it is smaller than the sum of its proper divisors (92354420).

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

69983980 is a wasteful number, since it uses less digits than its factorization.

69983980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 69983980 is about 8365.6428324427. The cubic root of 69983980 is about 412.0970880629.

The spelling of 69983980 in words is "sixty-nine million, nine hundred eighty-three thousand, nine hundred eighty".