715777 has 2 divisors, whose sum is σ = 715778. Its totient is φ = 715776.

The previous prime is 715753. The next prime is 715789. The reversal of 715777 is 777517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 484416 + 231361 = 696^2 + 481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-715777 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (715727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357888 + 357889.

It is an arithmetic number, because the mean of its divisors is an integer number (357889).

It is a Proth number, since it is equal to 699 ⋅ 2¹⁰ + 1 and 699 < 2¹⁰.

2⁷¹⁵⁷⁷⁷ is an apocalyptic number.

It is an amenable number.

715777 is a deficient number, since it is larger than the sum of its proper divisors (1).

715777 is an equidigital number, since it uses as much as digits as its factorization.

715777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12005, while the sum is 34.

The square root of 715777 is about 846.0360512413. The cubic root of 715777 is about 89.4525199927.

It can be divided in two parts, 715 and 777, that multiplied together give a palindrome (555555).

The spelling of 715777 in words is "seven hundred fifteen thousand, seven hundred seventy-seven".