96778817 has 2 divisors, whose sum is σ = 96778818. Its totient is φ = 96778816.

The previous prime is 96778789. The next prime is 96778859. The reversal of 96778817 is 71887769.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66846976 + 29931841 = 8176^2 + 5471^2 .

It is a cyclic number.

It is not a de Polignac number, because 96778817 - 2²⁰ = 95730241 is a prime.

It is a super-2 number, since 2×96778817² = 18732278839838978, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (96778117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48389408 + 48389409.

It is an arithmetic number, because the mean of its divisors is an integer number (48389409).

Almost surely, 2^96778817 is an apocalyptic number.

It is an amenable number.

96778817 is a deficient number, since it is larger than the sum of its proper divisors (1).

96778817 is an equidigital number, since it uses as much as digits as its factorization.

96778817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1185408, while the sum is 53.

The square root of 96778817 is about 9837.6225278265. The cubic root of 96778817 is about 459.1205898555.

The spelling of 96778817 in words is "ninety-six million, seven hundred seventy-eight thousand, eight hundred seventeen".