97722787 has 2 divisors, whose sum is σ = 97722788. Its totient is φ = 97722786.

The previous prime is 97722733. The next prime is 97722799. The reversal of 97722787 is 78722779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97722787 - 2¹⁹ = 97198499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97722787.

It is not a weakly prime, because it can be changed into another prime (97722707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48861393 + 48861394.

It is an arithmetic number, because the mean of its divisors is an integer number (48861394).

Almost surely, 2^97722787 is an apocalyptic number.

97722787 is a deficient number, since it is larger than the sum of its proper divisors (1).

97722787 is an equidigital number, since it uses as much as digits as its factorization.

97722787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691488, while the sum is 49.

The square root of 97722787 is about 9885.4836502824. The cubic root of 97722787 is about 460.6084999984.

The spelling of 97722787 in words is "ninety-seven million, seven hundred twenty-two thousand, seven hundred eighty-seven".