155680206 has 32 divisors (see below), whose sum is σ = 340305408. Its totient is φ = 47087040.

The previous prime is 155680199. The next prime is 155680211. The reversal of 155680206 is 602086551.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 38811 + ... + 42633.

It is an arithmetic number, because the mean of its divisors is an integer number (10634544).

Almost surely, 2^155680206 is an apocalyptic number.

155680206 is an abundant number, since it is smaller than the sum of its proper divisors (184625202).

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

155680206 is a wasteful number, since it uses less digits than its factorization.

155680206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 155680206 is about 12477.1874234541. The cubic root of 155680206 is about 537.9531636051.

It can be divided in two parts, 155 and 680206, that added together give a triangular number (680361 = T₁₁₆₆).

The spelling of 155680206 in words is "one hundred fifty-five million, six hundred eighty thousand, two hundred six".