84724697 has 2 divisors, whose sum is σ = 84724698. Its totient is φ = 84724696.

The previous prime is 84724693. The next prime is 84724699. The reversal of 84724697 is 79642748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67551961 + 17172736 = 8219^2 + 4144^2 .

It is a cyclic number.

It is not a de Polignac number, because 84724697 - 2² = 84724693 is a prime.

Together with 84724699, 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 (84724693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42362348 + 42362349.

It is an arithmetic number, because the mean of its divisors is an integer number (42362349).

Almost surely, 2^84724697 is an apocalyptic number.

It is an amenable number.

84724697 is a deficient number, since it is larger than the sum of its proper divisors (1).

84724697 is an equidigital number, since it uses as much as digits as its factorization.

84724697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The square root of 84724697 is about 9204.6019468525. The cubic root of 84724697 is about 439.2077634540.

The spelling of 84724697 in words is "eighty-four million, seven hundred twenty-four thousand, six hundred ninety-seven".