654642087 has 16 divisors (see below), whose sum is σ = 953164800. Its totient is φ = 396353600.

The previous prime is 654642029. The next prime is 654642101. The reversal of 654642087 is 780246456.

It is a cyclic number.

It is not a de Polignac number, because 654642087 - 2¹⁰ = 654641063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654642007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25162 + ... + 44072.

It is an arithmetic number, because the mean of its divisors is an integer number (59572800).

Almost surely, 2^654642087 is an apocalyptic number.

654642087 is a deficient number, since it is larger than the sum of its proper divisors (298522713).

654642087 is a wasteful number, since it uses less digits than its factorization.

654642087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19974.

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 654642087 is about 25585.9744195917. The cubic root of 654642087 is about 868.2963476456.

The spelling of 654642087 in words is "six hundred fifty-four million, six hundred forty-two thousand, eighty-seven".