97776667 has 2 divisors, whose sum is σ = 97776668. Its totient is φ = 97776666.

The previous prime is 97776649. The next prime is 97776683. The reversal of 97776667 is 76667779.

It is a strong prime.

It is an emirp because it is prime and its reverse (76667779) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97776667 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97776067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48888333 + 48888334.

It is an arithmetic number, because the mean of its divisors is an integer number (48888334).

Almost surely, 2^97776667 is an apocalyptic number.

97776667 is a deficient number, since it is larger than the sum of its proper divisors (1).

97776667 is an equidigital number, since it uses as much as digits as its factorization.

97776667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4667544, while the sum is 55.

The square root of 97776667 is about 9888.2084828345. The cubic root of 97776667 is about 460.6931374613.

The spelling of 97776667 in words is "ninety-seven million, seven hundred seventy-six thousand, six hundred sixty-seven".