654942671 has 4 divisors (see below), whose sum is σ = 656506200. Its totient is φ = 653379144.

The previous prime is 654942653. The next prime is 654942679. The reversal of 654942671 is 176249456.

654942671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 654942671 - 2¹⁴ = 654926287 is a prime.

It is a super-2 number, since 2×654942671² = 857899804593228482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654942679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781136 + ... + 781973.

It is an arithmetic number, because the mean of its divisors is an integer number (164126550).

Almost surely, 2^654942671 is an apocalyptic number.

654942671 is a deficient number, since it is larger than the sum of its proper divisors (1563529).

654942671 is a wasteful number, since it uses less digits than its factorization.

654942671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563528.

The product of its digits is 362880, while the sum is 44.

The square root of 654942671 is about 25591.8477449363. The cubic root of 654942671 is about 868.4292223154.

The spelling of 654942671 in words is "six hundred fifty-four million, nine hundred forty-two thousand, six hundred seventy-one".