654621402 has 32 divisors (see below), whose sum is σ = 1401523200. Its totient is φ = 203216688.

The previous prime is 654621371. The next prime is 654621403. The reversal of 654621402 is 204126456.

654621402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 654621402.

It is not an unprimeable number, because it can be changed into a prime (654621403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41938 + ... + 55389.

It is an arithmetic number, because the mean of its divisors is an integer number (43797600).

Almost surely, 2^654621402 is an apocalyptic number.

654621402 is an abundant number, since it is smaller than the sum of its proper divisors (746901798).

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

654621402 is a wasteful number, since it uses less digits than its factorization.

654621402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97410.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 654621402 is about 25585.5701910276. The cubic root of 654621402 is about 868.2872022416.

Adding to 654621402 its reverse (204126456), we get a palindrome (858747858).

The spelling of 654621402 in words is "six hundred fifty-four million, six hundred twenty-one thousand, four hundred two".