6635223402 has 64 divisors (see below), whose sum is σ = 14198353920. Its totient is φ = 2062326464.

The previous prime is 6635223359. The next prime is 6635223407. The reversal of 6635223402 is 2043225366.

It is not an unprimeable number, because it can be changed into a prime (6635223407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1742833 + ... + 1746635.

It is an arithmetic number, because the mean of its divisors is an integer number (221849280).

Almost surely, 2^6635223402 is an apocalyptic number.

6635223402 is an abundant number, since it is smaller than the sum of its proper divisors (7563130518).

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

6635223402 is a wasteful number, since it uses less digits than its factorization.

6635223402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147.

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 6635223402 is about 81456.8806301837. The cubic root of 6635223402 is about 1879.1084691303.

Adding to 6635223402 its reverse (2043225366), we get a palindrome (8678448768).

The spelling of 6635223402 in words is "six billion, six hundred thirty-five million, two hundred twenty-three thousand, four hundred two".