156414985 has 8 divisors (see below), whose sum is σ = 188958600. Its totient is φ = 124291584.

The previous prime is 156414953. The next prime is 156414989. The reversal of 156414985 is 589414651.

156414985 = 8843² + 8844².

It can be written as a sum of positive squares in 4 ways, for example, as 3125824 + 153289161 = 1768^2 + 12381^2 .

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

It is a 8-Lehmer number, since φ(156414985) divides (156414985-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 156414985 - 2⁵ = 156414953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156414989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104232 + ... + 105721.

It is an arithmetic number, because the mean of its divisors is an integer number (23619825).

Almost surely, 2^156414985 is an apocalyptic number.

156414985 is the 8844-th centered square number.

It is an amenable number.

156414985 is a deficient number, since it is larger than the sum of its proper divisors (32543615).

156414985 is a wasteful number, since it uses less digits than its factorization.

156414985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210107.

The product of its digits is 172800, while the sum is 43.

The square root of 156414985 is about 12506.5976588359. The cubic root of 156414985 is about 538.7981788407.

The spelling of 156414985 in words is "one hundred fifty-six million, four hundred fourteen thousand, nine hundred eighty-five".