139678575 has 12 divisors (see below), whose sum is σ = 230935368. Its totient is φ = 74495200.

The previous prime is 139678571. The next prime is 139678601. The reversal of 139678575 is 575876931.

It is not a de Polignac number, because 139678575 - 2² = 139678571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139678571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 931116 + ... + 931265.

It is an arithmetic number, because the mean of its divisors is an integer number (19244614).

Almost surely, 2^139678575 is an apocalyptic number.

139678575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139678575 is a deficient number, since it is larger than the sum of its proper divisors (91256793).

139678575 is a wasteful number, since it uses less digits than its factorization.

139678575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862394 (or 1862389 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 51.

The square root of 139678575 is about 11818.5690758230. The cubic root of 139678575 is about 518.8517253451.

The spelling of 139678575 in words is "one hundred thirty-nine million, six hundred seventy-eight thousand, five hundred seventy-five".