870432155 has 8 divisors (see below), whose sum is σ = 1045020192. Its totient is φ = 696011328.

The previous prime is 870432149. The next prime is 870432203. The reversal of 870432155 is 551234078.

It is a happy number.

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 870432155 - 2⁴ = 870432139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30047 + ... + 51416.

It is an arithmetic number, because the mean of its divisors is an integer number (130627524).

Almost surely, 2^870432155 is an apocalyptic number.

870432155 is a deficient number, since it is larger than the sum of its proper divisors (174588037).

870432155 is a wasteful number, since it uses less digits than its factorization.

870432155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83605.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 870432155 is about 29503.0872113411. The cubic root of 870432155 is about 954.7983108885.

It can be divided in two parts, 87043 and 2155, that added together give a palindrome (89198).

The spelling of 870432155 in words is "eight hundred seventy million, four hundred thirty-two thousand, one hundred fifty-five".