139670 has 8 divisors (see below), whose sum is σ = 251424. Its totient is φ = 55864.

The previous prime is 139663. The next prime is 139681. The reversal of 139670 is 76931.

139670 = T₃₆ + T₃₇ + ... + T₉₅.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

139670 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6974 + ... + 6993.

It is an arithmetic number, because the mean of its divisors is an integer number (31428).

2¹³⁹⁶⁷⁰ is an apocalyptic number.

139670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139670 is a deficient number, since it is larger than the sum of its proper divisors (111754).

139670 is a wasteful number, since it uses less digits than its factorization.

139670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13974.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 139670 is about 373.7244974577. The cubic root of 139670 is about 51.8841107528.

The spelling of 139670 in words is "one hundred thirty-nine thousand, six hundred seventy".