69091040 has 48 divisors (see below), whose sum is σ = 165926880. Its totient is φ = 27179520.

The previous prime is 69091037. The next prime is 69091051. The reversal of 69091040 is 4019096.

It is a junction number, because it is equal to n+sod(n) for n = 69090994 and 69091012.

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, 6221 + ... + 13299.

It is an arithmetic number, because the mean of its divisors is an integer number (3456810).

Almost surely, 2^69091040 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 69091040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82963440).

69091040 is an abundant number, since it is smaller than the sum of its proper divisors (96835840).

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

69091040 is a wasteful number, since it uses less digits than its factorization.

69091040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7155 (or 7147 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 69091040 is about 8312.1020205481. The cubic root of 69091040 is about 410.3369033353.

The spelling of 69091040 in words is "sixty-nine million, ninety-one thousand, forty".