654478093 has 2 divisors, whose sum is σ = 654478094. Its totient is φ = 654478092.

The previous prime is 654478067. The next prime is 654478129. The reversal of 654478093 is 390874456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 629106724 + 25371369 = 25082^2 + 5037^2 .

It is a cyclic number.

It is not a de Polignac number, because 654478093 - 2²⁵ = 620923661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654478063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327239046 + 327239047.

It is an arithmetic number, because the mean of its divisors is an integer number (327239047).

Almost surely, 2^654478093 is an apocalyptic number.

It is an amenable number.

654478093 is a deficient number, since it is larger than the sum of its proper divisors (1).

654478093 is an equidigital number, since it uses as much as digits as its factorization.

654478093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 654478093 is about 25582.7694552408. The cubic root of 654478093 is about 868.2238361231.

The spelling of 654478093 in words is "six hundred fifty-four million, four hundred seventy-eight thousand, ninety-three".