971215 has 8 divisors (see below), whose sum is σ = 1332000. Its totient is φ = 665952.

The previous prime is 971207. The next prime is 971237. The reversal of 971215 is 512179.

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

It is not a de Polignac number, because 971215 - 2³ = 971207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 971215.

It is a congruent number.

It is an unprimeable number.

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, 13840 + ... + 13909.

It is an arithmetic number, because the mean of its divisors is an integer number (166500).

2⁹⁷¹²¹⁵ is an apocalyptic number.

971215 is a deficient number, since it is larger than the sum of its proper divisors (360785).

971215 is a wasteful number, since it uses less digits than its factorization.

971215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27761.

The product of its digits is 630, while the sum is 25.

The square root of 971215 is about 985.5024099412. The cubic root of 971215 is about 99.0311434855.

It can be divided in two parts, 97121 and 5, that multiplied together give a triangular number (485605 = T₉₈₅).

The spelling of 971215 in words is "nine hundred seventy-one thousand, two hundred fifteen".