8742497 has 2 divisors, whose sum is σ = 8742498. Its totient is φ = 8742496.

The previous prime is 8742493. The next prime is 8742499. The reversal of 8742497 is 7942478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8549776 + 192721 = 2924^2 + 439^2 .

It is a cyclic number.

It is not a de Polignac number, because 8742497 - 2² = 8742493 is a prime.

Together with 8742499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8742493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4371248 + 4371249.

It is an arithmetic number, because the mean of its divisors is an integer number (4371249).

Almost surely, 2^8742497 is an apocalyptic number.

It is an amenable number.

8742497 is a deficient number, since it is larger than the sum of its proper divisors (1).

8742497 is an equidigital number, since it uses as much as digits as its factorization.

8742497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 41.

The square root of 8742497 is about 2956.7713810844. The cubic root of 8742497 is about 206.0053490929.

The spelling of 8742497 in words is "eight million, seven hundred forty-two thousand, four hundred ninety-seven".