77199313 has 2 divisors, whose sum is σ = 77199314. Its totient is φ = 77199312.

The previous prime is 77199307. The next prime is 77199361. The reversal of 77199313 is 31399177.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76877824 + 321489 = 8768^2 + 567^2 .

It is a cyclic number.

It is not a de Polignac number, because 77199313 - 2⁹ = 77198801 is a prime.

It is not a weakly prime, because it can be changed into another prime (77199383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38599656 + 38599657.

It is an arithmetic number, because the mean of its divisors is an integer number (38599657).

Almost surely, 2^77199313 is an apocalyptic number.

It is an amenable number.

77199313 is a deficient number, since it is larger than the sum of its proper divisors (1).

77199313 is an equidigital number, since it uses as much as digits as its factorization.

77199313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35721, while the sum is 40.

The square root of 77199313 is about 8786.3139597900. The cubic root of 77199313 is about 425.7988444674.

The spelling of 77199313 in words is "seventy-seven million, one hundred ninety-nine thousand, three hundred thirteen".