139752066 has 8 divisors (see below), whose sum is σ = 279504144. Its totient is φ = 46584020.

The previous prime is 139752047. The next prime is 139752077. The reversal of 139752066 is 660257931.

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

139752066 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11646000 + ... + 11646011.

It is an arithmetic number, because the mean of its divisors is an integer number (34938018).

Almost surely, 2^139752066 is an apocalyptic number.

139752066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

139752066 is a wasteful number, since it uses less digits than its factorization.

139752066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23292016.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 139752066 is about 11821.6777997034. The cubic root of 139752066 is about 518.9427062433.

The spelling of 139752066 in words is "one hundred thirty-nine million, seven hundred fifty-two thousand, sixty-six".