676781401 has 2 divisors, whose sum is σ = 676781402. Its totient is φ = 676781400.

The previous prime is 676781269. The next prime is 676781431. The reversal of 676781401 is 104187676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 517517001 + 159264400 = 22749^2 + 12620^2 .

It is a cyclic number.

It is not a de Polignac number, because 676781401 - 2¹¹ = 676779353 is a prime.

It is not a weakly prime, because it can be changed into another prime (676781431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338390700 + 338390701.

It is an arithmetic number, because the mean of its divisors is an integer number (338390701).

Almost surely, 2^676781401 is an apocalyptic number.

It is an amenable number.

676781401 is a deficient number, since it is larger than the sum of its proper divisors (1).

676781401 is an equidigital number, since it uses as much as digits as its factorization.

676781401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 676781401 is about 26015.0226023350. The cubic root of 676781401 is about 877.9763248096.

The spelling of 676781401 in words is "six hundred seventy-six million, seven hundred eighty-one thousand, four hundred one".