654400102 has 4 divisors (see below), whose sum is σ = 981600156. Its totient is φ = 327200050.

The previous prime is 654400079. The next prime is 654400127. The reversal of 654400102 is 201004456.

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

It is a super-2 number, since 2×654400102² = 856478986995220808, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 163600024 + ... + 163600027.

It is an arithmetic number, because the mean of its divisors is an integer number (245400039).

Almost surely, 2^654400102 is an apocalyptic number.

654400102 is a deficient number, since it is larger than the sum of its proper divisors (327200054).

654400102 is a wasteful number, since it uses less digits than its factorization.

654400102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327200053.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 654400102 is about 25581.2451221593. The cubic root of 654400102 is about 868.1893474031.

Adding to 654400102 its reverse (201004456), we get a palindrome (855404558).

The spelling of 654400102 in words is "six hundred fifty-four million, four hundred thousand, one hundred two".