139065580 has 12 divisors (see below), whose sum is σ = 292037760. Its totient is φ = 55626224.

The previous prime is 139065529. The next prime is 139065581. The reversal of 139065580 is 85560931.

139065580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (139065581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3476620 + ... + 3476659.

It is an arithmetic number, because the mean of its divisors is an integer number (24336480).

Almost surely, 2^139065580 is an apocalyptic number.

139065580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139065580 is an abundant number, since it is smaller than the sum of its proper divisors (152972180).

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

139065580 is a wasteful number, since it uses less digits than its factorization.

139065580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6953288 (or 6953286 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 139065580 is about 11792.6070060865. The cubic root of 139065580 is about 518.0915994103.

The spelling of 139065580 in words is "one hundred thirty-nine million, sixty-five thousand, five hundred eighty".