654948769 has 2 divisors, whose sum is σ = 654948770. Its totient is φ = 654948768.

The previous prime is 654948757. The next prime is 654948821. The reversal of 654948769 is 967849456.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 644144400 + 10804369 = 25380^2 + 3287^2 .

It is a cyclic number.

It is not a de Polignac number, because 654948769 - 2⁵ = 654948737 is a prime.

It is a super-2 number, since 2×654948769² = 857915780029230722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (654948169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327474384 + 327474385.

It is an arithmetic number, because the mean of its divisors is an integer number (327474385).

Almost surely, 2^654948769 is an apocalyptic number.

It is an amenable number.

654948769 is a deficient number, since it is larger than the sum of its proper divisors (1).

654948769 is an equidigital number, since it uses as much as digits as its factorization.

654948769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 58.

The square root of 654948769 is about 25591.9668841611. The cubic root of 654948769 is about 868.4319175462.

It can be divided in two parts, 65494 and 8769, that multiplied together give a triangular number (574316886 = T₃₃₈₉₁).

The spelling of 654948769 in words is "six hundred fifty-four million, nine hundred forty-eight thousand, seven hundred sixty-nine".