155680887 has 8 divisors (see below), whose sum is σ = 207973504. Its totient is φ = 103587768.

The previous prime is 155680871. The next prime is 155680897. The reversal of 155680887 is 788086551.

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

It is not a de Polignac number, because 155680887 - 2⁴ = 155680871 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 (155680817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48043 + ... + 51180.

It is an arithmetic number, because the mean of its divisors is an integer number (25996688).

Almost surely, 2^155680887 is an apocalyptic number.

155680887 is a deficient number, since it is larger than the sum of its proper divisors (52292617).

155680887 is an equidigital number, since it uses as much as digits as its factorization.

155680887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99749.

The product of its (nonzero) digits is 537600, while the sum is 48.

The square root of 155680887 is about 12477.2147132283. The cubic root of 155680887 is about 537.9539480028.

The spelling of 155680887 in words is "one hundred fifty-five million, six hundred eighty thousand, eight hundred eighty-seven".