676491731 has 2 divisors, whose sum is σ = 676491732. Its totient is φ = 676491730.

The previous prime is 676491719. The next prime is 676491779. The reversal of 676491731 is 137194676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 676491731 - 2⁶ = 676491667 is a prime.

It is a super-2 number, since 2×676491731² = 915282124222752722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (676491131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338245865 + 338245866.

It is an arithmetic number, because the mean of its divisors is an integer number (338245866).

Almost surely, 2^676491731 is an apocalyptic number.

676491731 is a deficient number, since it is larger than the sum of its proper divisors (1).

676491731 is an equidigital number, since it uses as much as digits as its factorization.

676491731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 44.

The square root of 676491731 is about 26009.4546463397. The cubic root of 676491731 is about 877.8510457093.

The spelling of 676491731 in words is "six hundred seventy-six million, four hundred ninety-one thousand, seven hundred thirty-one".