156661343 has 8 divisors (see below), whose sum is σ = 161698560. Its totient is φ = 151703640.

The previous prime is 156661339. The next prime is 156661363. The reversal of 156661343 is 343166651.

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

It is a cyclic number.

It is not a de Polignac number, because 156661343 - 2² = 156661339 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 (156661313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15863 + ... + 23768.

It is an arithmetic number, because the mean of its divisors is an integer number (20212320).

Almost surely, 2^156661343 is an apocalyptic number.

156661343 is a deficient number, since it is larger than the sum of its proper divisors (5037217).

156661343 is an equidigital number, since it uses as much as digits as its factorization.

156661343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39757.

The product of its digits is 38880, while the sum is 35.

The square root of 156661343 is about 12516.4429052347. The cubic root of 156661343 is about 539.0809045535.

The spelling of 156661343 in words is "one hundred fifty-six million, six hundred sixty-one thousand, three hundred forty-three".