140196661 has 8 divisors (see below), whose sum is σ = 159591744. Its totient is φ = 121909920.

The previous prime is 140196659. The next prime is 140196673. The reversal of 140196661 is 166691041.

It is a happy number.

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

It is not a de Polignac number, because 140196661 - 2¹ = 140196659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140196461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276816 + ... + 277321.

It is an arithmetic number, because the mean of its divisors is an integer number (19948968).

Almost surely, 2^140196661 is an apocalyptic number.

140196661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140196661 is a deficient number, since it is larger than the sum of its proper divisors (19395083).

140196661 is a wasteful number, since it uses less digits than its factorization.

140196661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554171.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 140196661 is about 11840.4670938270. The cubic root of 140196661 is about 519.4924300200.

The spelling of 140196661 in words is "one hundred forty million, one hundred ninety-six thousand, six hundred sixty-one".