674406787 has 2 divisors, whose sum is σ = 674406788. Its totient is φ = 674406786.

The previous prime is 674406739. The next prime is 674406793. The reversal of 674406787 is 787604476.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674406787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 674406787.

It is not a weakly prime, because it can be changed into another prime (674406727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337203393 + 337203394.

It is an arithmetic number, because the mean of its divisors is an integer number (337203394).

Almost surely, 2^674406787 is an apocalyptic number.

674406787 is a deficient number, since it is larger than the sum of its proper divisors (1).

674406787 is an equidigital number, since it uses as much as digits as its factorization.

674406787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The square root of 674406787 is about 25969.3432146445. The cubic root of 674406787 is about 876.9482735062.

The spelling of 674406787 in words is "six hundred seventy-four million, four hundred six thousand, seven hundred eighty-seven".