69880944 has 80 divisors (see below), whose sum is σ = 213002240. Its totient is φ = 19319040.

The previous prime is 69880919. The next prime is 69880949. The reversal of 69880944 is 44908896.

It is a super-2 number, since 2×69880944² = 9766692668662272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 69880893 and 69880902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69880949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7062 + ... + 13770.

It is an arithmetic number, because the mean of its divisors is an integer number (2662528).

Almost surely, 2^69880944 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 69880944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106501120).

69880944 is an abundant number, since it is smaller than the sum of its proper divisors (143121296).

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

69880944 is a wasteful number, since it uses less digits than its factorization.

69880944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6758 (or 6752 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 69880944 is about 8359.4822806200. The cubic root of 69880944 is about 411.8947479907.

The spelling of 69880944 in words is "sixty-nine million, eight hundred eighty thousand, nine hundred forty-four".