654664734 has 64 divisors (see below), whose sum is σ = 1519430400. Its totient is φ = 208674144.

The previous prime is 654664733. The next prime is 654664757. The reversal of 654664734 is 437466456.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 654664734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654664733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165609 + ... + 169515.

It is an arithmetic number, because the mean of its divisors is an integer number (23741100).

Almost surely, 2^654664734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654664734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (759715200).

654664734 is an abundant number, since it is smaller than the sum of its proper divisors (864765666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654664734 is a wasteful number, since it uses less digits than its factorization.

654664734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054 (or 4048 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The square root of 654664734 is about 25586.4169824538. The cubic root of 654664734 is about 868.3063602826.

The spelling of 654664734 in words is "six hundred fifty-four million, six hundred sixty-four thousand, seven hundred thirty-four".