97642847 has 2 divisors, whose sum is σ = 97642848. Its totient is φ = 97642846.

The previous prime is 97642841. The next prime is 97642859. The reversal of 97642847 is 74824679.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97642847 - 2²² = 93448543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97642841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48821423 + 48821424.

It is an arithmetic number, because the mean of its divisors is an integer number (48821424).

Almost surely, 2^97642847 is an apocalyptic number.

97642847 is a deficient number, since it is larger than the sum of its proper divisors (1).

97642847 is an equidigital number, since it uses as much as digits as its factorization.

97642847 is an odious number, because the sum of its binary digits is odd.

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

The square root of 97642847 is about 9881.4395206367. The cubic root of 97642847 is about 460.4828688145.

It can be divided in two parts, 97642 and 847, that added together give a palindrome (98489).

The spelling of 97642847 in words is "ninety-seven million, six hundred forty-two thousand, eight hundred forty-seven".