155085680 has 20 divisors (see below), whose sum is σ = 360574392. Its totient is φ = 62034240.

The previous prime is 155085661. The next prime is 155085691. The reversal of 155085680 is 86580551.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent 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, 969206 + ... + 969365.

Almost surely, 2^155085680 is an apocalyptic number.

155085680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155085680 is an abundant number, since it is smaller than the sum of its proper divisors (205488712).

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

155085680 is a wasteful number, since it uses less digits than its factorization.

155085680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938584 (or 1938578 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 155085680 is about 12453.3401142023. The cubic root of 155085680 is about 537.2674948973.

The spelling of 155085680 in words is "one hundred fifty-five million, eighty-five thousand, six hundred eighty".