69040080 has 80 divisors (see below), whose sum is σ = 237812160. Its totient is φ = 18410112.

The previous prime is 69040073. The next prime is 69040087. The reversal of 69040080 is 8004096.

It is an interprime number because it is at equal distance from previous prime (69040073) and next prime (69040087).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69040087) 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, 13822 + ... + 18141.

It is an arithmetic number, because the mean of its divisors is an integer number (2972652).

Almost surely, 2^69040080 is an apocalyptic number.

69040080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69040080 is an abundant number, since it is smaller than the sum of its proper divisors (168772080).

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

69040080 is a wasteful number, since it uses less digits than its factorization.

69040080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31985 (or 31973 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 69040080 is about 8309.0360451740. The cubic root of 69040080 is about 410.2359934257.

The spelling of 69040080 in words is "sixty-nine million, forty thousand, eighty".