972651 has 4 divisors (see below), whose sum is σ = 1296872. Its totient is φ = 648432.

The previous prime is 972649. The next prime is 972661. The reversal of 972651 is 156279.

972651 is nontrivially palindromic in base 8.

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

It is not a de Polignac number, because 972651 - 2¹ = 972649 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162106 + ... + 162111.

It is an arithmetic number, because the mean of its divisors is an integer number (324218).

2⁹⁷²⁶⁵¹ is an apocalyptic number.

972651 is a deficient number, since it is larger than the sum of its proper divisors (324221).

972651 is a wasteful number, since it uses less digits than its factorization.

972651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324220.

The product of its digits is 3780, while the sum is 30.

The square root of 972651 is about 986.2307032333. The cubic root of 972651 is about 99.0799272912.

The spelling of 972651 in words is "nine hundred seventy-two thousand, six hundred fifty-one".