77697353 has 2 divisors, whose sum is σ = 77697354. Its totient is φ = 77697352.

The previous prime is 77697349. The next prime is 77697371. The reversal of 77697353 is 35379677.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43731769 + 33965584 = 6613^2 + 5828^2 .

It is a cyclic number.

It is not a de Polignac number, because 77697353 - 2² = 77697349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77697298 and 77697307.

It is not a weakly prime, because it can be changed into another prime (77697383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38848676 + 38848677.

It is an arithmetic number, because the mean of its divisors is an integer number (38848677).

Almost surely, 2^77697353 is an apocalyptic number.

It is an amenable number.

77697353 is a deficient number, since it is larger than the sum of its proper divisors (1).

77697353 is an equidigital number, since it uses as much as digits as its factorization.

77697353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 833490, while the sum is 47.

The square root of 77697353 is about 8814.6102012511. The cubic root of 77697353 is about 426.7125419287.

The spelling of 77697353 in words is "seventy-seven million, six hundred ninety-seven thousand, three hundred fifty-three".