97643827 has 2 divisors, whose sum is σ = 97643828. Its totient is φ = 97643826.

The previous prime is 97643803. The next prime is 97643839. The reversal of 97643827 is 72834679.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97643827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97643867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48821913 + 48821914.

It is an arithmetic number, because the mean of its divisors is an integer number (48821914).

Almost surely, 2^97643827 is an apocalyptic number.

97643827 is a deficient number, since it is larger than the sum of its proper divisors (1).

97643827 is an equidigital number, since it uses as much as digits as its factorization.

97643827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 97643827 is about 9881.4891084290. The cubic root of 97643827 is about 460.4844093667.

The spelling of 97643827 in words is "ninety-seven million, six hundred forty-three thousand, eight hundred twenty-seven".