972861 has 8 divisors (see below), whose sum is σ = 1307040. Its totient is φ = 643632.

The previous prime is 972847. The next prime is 972869. The reversal of 972861 is 168279.

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

It is not a de Polignac number, because 972861 - 2¹¹ = 970813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750 + ... + 1583.

It is an arithmetic number, because the mean of its divisors is an integer number (163380).

2⁹⁷²⁸⁶¹ is an apocalyptic number.

It is an amenable number.

972861 is a deficient number, since it is larger than the sum of its proper divisors (334179).

972861 is a wasteful number, since it uses less digits than its factorization.

972861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475.

The product of its digits is 6048, while the sum is 33.

The square root of 972861 is about 986.3371634487. The cubic root of 972861 is about 99.0870573880.

The spelling of 972861 in words is "nine hundred seventy-two thousand, eight hundred sixty-one".