972764587 has 2 divisors, whose sum is σ = 972764588. Its totient is φ = 972764586.

The previous prime is 972764563. The next prime is 972764591. The reversal of 972764587 is 785467279.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 972764587 - 2¹⁹ = 972240299 is a prime.

It is not a weakly prime, because it can be changed into another prime (972764557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486382293 + 486382294.

It is an arithmetic number, because the mean of its divisors is an integer number (486382294).

Almost surely, 2^972764587 is an apocalyptic number.

972764587 is a deficient number, since it is larger than the sum of its proper divisors (1).

972764587 is an equidigital number, since it uses as much as digits as its factorization.

972764587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5927040, while the sum is 55.

The square root of 972764587 is about 31189.1741955442. The cubic root of 972764587 is about 990.8378402008.

The spelling of 972764587 in words is "nine hundred seventy-two million, seven hundred sixty-four thousand, five hundred eighty-seven".