971506 has 4 divisors (see below), whose sum is σ = 1457262. Its totient is φ = 485752.

The previous prime is 971501. The next prime is 971513. The reversal of 971506 is 605179.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 605179 = 607 ⋅997.

It can be written as a sum of positive squares in only one way, i.e., 600625 + 370881 = 775^2 + 609^2 .

It is not an unprimeable number, because it can be changed into a prime (971501) by changing a digit.

971506 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242875 + ... + 242878.

2⁹⁷¹⁵⁰⁶ is an apocalyptic number.

971506 is a deficient number, since it is larger than the sum of its proper divisors (485756).

971506 is a wasteful number, since it uses less digits than its factorization.

971506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485755.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 971506 is about 985.6500393142. The cubic root of 971506 is about 99.0410332233.

The spelling of 971506 in words is "nine hundred seventy-one thousand, five hundred six".