654401087 has 2 divisors, whose sum is σ = 654401088. Its totient is φ = 654401086.

The previous prime is 654401051. The next prime is 654401131. The reversal of 654401087 is 780104456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654401087 - 2¹² = 654396991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654401687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327200543 + 327200544.

It is an arithmetic number, because the mean of its divisors is an integer number (327200544).

Almost surely, 2^654401087 is an apocalyptic number.

654401087 is a deficient number, since it is larger than the sum of its proper divisors (1).

654401087 is an equidigital number, since it uses as much as digits as its factorization.

654401087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 654401087 is about 25581.2643745379. The cubic root of 654401087 is about 868.1897830011.

The spelling of 654401087 in words is "six hundred fifty-four million, four hundred one thousand, eighty-seven".