69830820 has 72 divisors (see below), whose sum is σ = 213420480. Its totient is φ = 18480960.

The previous prime is 69830801. The next prime is 69830857. The reversal of 69830820 is 2803896.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23625 + ... + 26415.

Almost surely, 2^69830820 is an apocalyptic number.

69830820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69830820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106710240).

69830820 is an abundant number, since it is smaller than the sum of its proper divisors (143589660).

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

69830820 is a wasteful number, since it uses less digits than its factorization.

69830820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2940 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 69830820 is about 8356.4837102695. The cubic root of 69830820 is about 411.7962435468.

The spelling of 69830820 in words is "sixty-nine million, eight hundred thirty thousand, eight hundred twenty".