608289491 has 2 divisors, whose sum is σ = 608289492. Its totient is φ = 608289490.

The previous prime is 608289421. The next prime is 608289511. The reversal of 608289491 is 194982806.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 608289491 - 2¹⁰ = 608288467 is a prime.

It is a super-2 number, since 2×608289491² = 740032209722078162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (608289401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304144745 + 304144746.

It is an arithmetic number, because the mean of its divisors is an integer number (304144746).

Almost surely, 2^608289491 is an apocalyptic number.

608289491 is a deficient number, since it is larger than the sum of its proper divisors (1).

608289491 is an equidigital number, since it uses as much as digits as its factorization.

608289491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 608289491 is about 24663.5255184655. The cubic root of 608289491 is about 847.2991508684.

The spelling of 608289491 in words is "six hundred eight million, two hundred eighty-nine thousand, four hundred ninety-one".