654409802 has 4 divisors (see below), whose sum is σ = 981614706. Its totient is φ = 327204900.

The previous prime is 654409801. The next prime is 654409807. The reversal of 654409802 is 208904456.

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

It can be written as a sum of positive squares in only one way, i.e., 623950441 + 30459361 = 24979^2 + 5519^2 .

It is not an unprimeable number, because it can be changed into a prime (654409801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163602449 + ... + 163602452.

Almost surely, 2^654409802 is an apocalyptic number.

654409802 is a deficient number, since it is larger than the sum of its proper divisors (327204904).

654409802 is a wasteful number, since it uses less digits than its factorization.

654409802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327204903.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 654409802 is about 25581.4347134792. The cubic root of 654409802 is about 868.1936370291.

The spelling of 654409802 in words is "six hundred fifty-four million, four hundred nine thousand, eight hundred two".