972667543 has 2 divisors, whose sum is σ = 972667544. Its totient is φ = 972667542.

The previous prime is 972667541. The next prime is 972667547. The reversal of 972667543 is 345766279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 972667543 - 2¹ = 972667541 is a prime.

Together with 972667541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972667541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486333771 + 486333772.

It is an arithmetic number, because the mean of its divisors is an integer number (486333772).

Almost surely, 2^972667543 is an apocalyptic number.

972667543 is a deficient number, since it is larger than the sum of its proper divisors (1).

972667543 is an equidigital number, since it uses as much as digits as its factorization.

972667543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 49.

The square root of 972667543 is about 31187.6184246249. The cubic root of 972667543 is about 990.8048901030.

The spelling of 972667543 in words is "nine hundred seventy-two million, six hundred sixty-seven thousand, five hundred forty-three".