654685349 has 2 divisors, whose sum is σ = 654685350. Its totient is φ = 654685348.

The previous prime is 654685331. The next prime is 654685357. The reversal of 654685349 is 943586456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442050625 + 212634724 = 21025^2 + 14582^2 .

It is a cyclic number.

It is not a de Polignac number, because 654685349 - 2⁸ = 654685093 is a prime.

It is a super-2 number, since 2×654685349² = 857225812390503602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 654685297 and 654685306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654685319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327342674 + 327342675.

It is an arithmetic number, because the mean of its divisors is an integer number (327342675).

Almost surely, 2^654685349 is an apocalyptic number.

It is an amenable number.

654685349 is a deficient number, since it is larger than the sum of its proper divisors (1).

654685349 is an equidigital number, since it uses as much as digits as its factorization.

654685349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 50.

The square root of 654685349 is about 25586.8198297483. The cubic root of 654685349 is about 868.3154743358.

The spelling of 654685349 in words is "six hundred fifty-four million, six hundred eighty-five thousand, three hundred forty-nine".