634400102 has 8 divisors (see below), whose sum is σ = 1087543056. Its totient is φ = 271885752.

The previous prime is 634400077. The next prime is 634400147. The reversal of 634400102 is 201004436.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×634400102² = 804926978835220808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22657133 + ... + 22657160.

It is an arithmetic number, because the mean of its divisors is an integer number (135942882).

Almost surely, 2^634400102 is an apocalyptic number.

634400102 is a deficient number, since it is larger than the sum of its proper divisors (453142954).

634400102 is a wasteful number, since it uses less digits than its factorization.

634400102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45314302.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 634400102 is about 25187.3004111199. The cubic root of 634400102 is about 859.2530480163.

Adding to 634400102 its reverse (201004436), we get a palindrome (835404538).

The spelling of 634400102 in words is "six hundred thirty-four million, four hundred thousand, one hundred two".