77101897 has 2 divisors, whose sum is σ = 77101898. Its totient is φ = 77101896.

The previous prime is 77101891. The next prime is 77101901. The reversal of 77101897 is 79810177.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47279376 + 29822521 = 6876^2 + 5461^2 .

It is a cyclic number.

It is not a de Polignac number, because 77101897 - 2¹⁵ = 77069129 is a prime.

It is not a weakly prime, because it can be changed into another prime (77101891) 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, 38550948 + 38550949.

It is an arithmetic number, because the mean of its divisors is an integer number (38550949).

Almost surely, 2^77101897 is an apocalyptic number.

It is an amenable number.

77101897 is a deficient number, since it is larger than the sum of its proper divisors (1).

77101897 is an equidigital number, since it uses as much as digits as its factorization.

77101897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24696, while the sum is 40.

The square root of 77101897 is about 8780.7685882273. The cubic root of 77101897 is about 425.6196672259.

The spelling of 77101897 in words is "seventy-seven million, one hundred one thousand, eight hundred ninety-seven".