972667547 has 2 divisors, whose sum is σ = 972667548. Its totient is φ = 972667546.

The previous prime is 972667543. The next prime is 972667571. The reversal of 972667547 is 745766279.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 972667547 - 2² = 972667543 is a prime.

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, 486333773 + 486333774.

It is an arithmetic number, because the mean of its divisors is an integer number (486333774).

Almost surely, 2^972667547 is an apocalyptic number.

972667547 is a deficient number, since it is larger than the sum of its proper divisors (1).

972667547 is an equidigital number, since it uses as much as digits as its factorization.

972667547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4445280, while the sum is 53.

The square root of 972667547 is about 31187.6184887529. The cubic root of 972667547 is about 990.8048914612.

The spelling of 972667547 in words is "nine hundred seventy-two million, six hundred sixty-seven thousand, five hundred forty-seven".