83867155 has 4 divisors (see below), whose sum is σ = 100640592. Its totient is φ = 67093720.

The previous prime is 83867149. The next prime is 83867191. The reversal of 83867155 is 55176838.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83867155 - 2⁷ = 83867027 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8386711 + ... + 8386720.

It is an arithmetic number, because the mean of its divisors is an integer number (25160148).

Almost surely, 2^83867155 is an apocalyptic number.

83867155 is a deficient number, since it is larger than the sum of its proper divisors (16773437).

83867155 is a wasteful number, since it uses less digits than its factorization.

83867155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16773436.

The product of its digits is 201600, while the sum is 43.

The square root of 83867155 is about 9157.9012333613. The cubic root of 83867155 is about 437.7209202619.

The spelling of 83867155 in words is "eighty-three million, eight hundred sixty-seven thousand, one hundred fifty-five".