376696781 has 2 divisors, whose sum is σ = 376696782. Its totient is φ = 376696780.

The previous prime is 376696759. The next prime is 376696799. The reversal of 376696781 is 187696673.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226021156 + 150675625 = 15034^2 + 12275^2 .

It is an emirp because it is prime and its reverse (187696673) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 376696781 - 2¹⁰ = 376695757 is a prime.

It is a super-2 number, since 2×376696781² = 283800929631523922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (376696711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188348390 + 188348391.

It is an arithmetic number, because the mean of its divisors is an integer number (188348391).

Almost surely, 2^376696781 is an apocalyptic number.

It is an amenable number.

376696781 is a deficient number, since it is larger than the sum of its proper divisors (1).

376696781 is an equidigital number, since it uses as much as digits as its factorization.

376696781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 53.

The square root of 376696781 is about 19408.6779817689. The cubic root of 376696781 is about 722.2107851347.

The spelling of 376696781 in words is "three hundred seventy-six million, six hundred ninety-six thousand, seven hundred eighty-one".