97735987 has 2 divisors, whose sum is σ = 97735988. Its totient is φ = 97735986.

The previous prime is 97735933. The next prime is 97736011. The reversal of 97735987 is 78953779.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97735987 is a prime.

It is not a weakly prime, because it can be changed into another prime (97735787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48867993 + 48867994.

It is an arithmetic number, because the mean of its divisors is an integer number (48867994).

Almost surely, 2^97735987 is an apocalyptic number.

97735987 is a deficient number, since it is larger than the sum of its proper divisors (1).

97735987 is an equidigital number, since it uses as much as digits as its factorization.

97735987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3333960, while the sum is 55.

The square root of 97735987 is about 9886.1512733723. The cubic root of 97735987 is about 460.6292381109.

The spelling of 97735987 in words is "ninety-seven million, seven hundred thirty-five thousand, nine hundred eighty-seven".