139666702 has 8 divisors (see below), whose sum is σ = 239428656. Its totient is φ = 59857152.

The previous prime is 139666699. The next prime is 139666717. The reversal of 139666702 is 207666931.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4988083 + ... + 4988110.

It is an arithmetic number, because the mean of its divisors is an integer number (29928582).

Almost surely, 2^139666702 is an apocalyptic number.

139666702 is a deficient number, since it is larger than the sum of its proper divisors (99761954).

139666702 is an equidigital number, since it uses as much as digits as its factorization.

139666702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9976202.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 139666702 is about 11818.0667623770. The cubic root of 139666702 is about 518.8370237320.

The spelling of 139666702 in words is "one hundred thirty-nine million, six hundred sixty-six thousand, seven hundred two".