654639470 has 16 divisors (see below), whose sum is σ = 1178742240. Its totient is φ = 261768864.

The previous prime is 654639463. The next prime is 654639473. The reversal of 654639470 is 74936456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654639473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27071 + ... + 45189.

It is an arithmetic number, because the mean of its divisors is an integer number (73671390).

Almost surely, 2^654639470 is an apocalyptic number.

654639470 is a deficient number, since it is larger than the sum of its proper divisors (524102770).

654639470 is a wasteful number, since it uses less digits than its factorization.

654639470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21739.

The product of its (nonzero) digits is 544320, while the sum is 44.

The square root of 654639470 is about 25585.9232782403. The cubic root of 654639470 is about 868.2951906090.

The spelling of 654639470 in words is "six hundred fifty-four million, six hundred thirty-nine thousand, four hundred seventy".