97642211 has 2 divisors, whose sum is σ = 97642212. Its totient is φ = 97642210.

The previous prime is 97642201. The next prime is 97642213. The reversal of 97642211 is 11224679.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (11224679) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97642211 is a prime.

Together with 97642213, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (97642213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48821105 + 48821106.

It is an arithmetic number, because the mean of its divisors is an integer number (48821106).

Almost surely, 2^97642211 is an apocalyptic number.

97642211 is a deficient number, since it is larger than the sum of its proper divisors (1).

97642211 is an equidigital number, since it uses as much as digits as its factorization.

97642211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 97642211 is about 9881.4073390383. The cubic root of 97642211 is about 460.4818690221.

The spelling of 97642211 in words is "ninety-seven million, six hundred forty-two thousand, two hundred eleven".