69968920 has 64 divisors (see below), whose sum is σ = 180760320. Its totient is φ = 23877504.

The previous prime is 69968911. The next prime is 69968933. The reversal of 69968920 is 2986996.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78799 + ... + 79681.

It is an arithmetic number, because the mean of its divisors is an integer number (2824380).

Almost surely, 2^69968920 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 69968920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90380160).

69968920 is an abundant number, since it is smaller than the sum of its proper divisors (110791400).

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

69968920 is a wasteful number, since it uses less digits than its factorization.

69968920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 69968920 is about 8364.7426738663. The cubic root of 69968920 is about 412.0675259289.

The spelling of 69968920 in words is "sixty-nine million, nine hundred sixty-eight thousand, nine hundred twenty".