654634388 has 6 divisors (see below), whose sum is σ = 1145610186. Its totient is φ = 327317192.

The previous prime is 654634381. The next prime is 654634399. The reversal of 654634388 is 883436456.

It can be written as a sum of positive squares in only one way, i.e., 619611664 + 35022724 = 24892^2 + 5918^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654634381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81829295 + ... + 81829302.

It is an arithmetic number, because the mean of its divisors is an integer number (190935031).

Almost surely, 2^654634388 is an apocalyptic number.

It is an amenable number.

654634388 is a deficient number, since it is larger than the sum of its proper divisors (490975798).

654634388 is a wasteful number, since it uses less digits than its factorization.

654634388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163658601 (or 163658599 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 47.

The square root of 654634388 is about 25585.8239656260. The cubic root of 654634388 is about 868.2929437297.

The spelling of 654634388 in words is "six hundred fifty-four million, six hundred thirty-four thousand, three hundred eighty-eight".