654140587 has 2 divisors, whose sum is σ = 654140588. Its totient is φ = 654140586.

The previous prime is 654140563. The next prime is 654140621. The reversal of 654140587 is 785041456.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654140587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (654140087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327070293 + 327070294.

It is an arithmetic number, because the mean of its divisors is an integer number (327070294).

Almost surely, 2^654140587 is an apocalyptic number.

654140587 is a deficient number, since it is larger than the sum of its proper divisors (1).

654140587 is an equidigital number, since it uses as much as digits as its factorization.

654140587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 654140587 is about 25576.1722507493. The cubic root of 654140587 is about 868.0745664774.

The spelling of 654140587 in words is "six hundred fifty-four million, one hundred forty thousand, five hundred eighty-seven".