654704849 has 2 divisors, whose sum is σ = 654704850. Its totient is φ = 654704848.

The previous prime is 654704803. The next prime is 654704861. The reversal of 654704849 is 948407456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654336400 + 368449 = 25580^2 + 607^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654704849 is a prime.

It is a super-2 number, since 2×654704849² = 857276878608225602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (654704749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327352424 + 327352425.

It is an arithmetic number, because the mean of its divisors is an integer number (327352425).

Almost surely, 2^654704849 is an apocalyptic number.

It is an amenable number.

654704849 is a deficient number, since it is larger than the sum of its proper divisors (1).

654704849 is an equidigital number, since it uses as much as digits as its factorization.

654704849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 654704849 is about 25587.2008824725. The cubic root of 654704849 is about 868.3240952627.

The spelling of 654704849 in words is "six hundred fifty-four million, seven hundred four thousand, eight hundred forty-nine".