103634921 has 16 divisors (see below), whose sum is σ = 115304448. Its totient is φ = 92534400.

The previous prime is 103634917. The next prime is 103634929. The reversal of 103634921 is 129436301.

It is a cyclic number.

It is not a de Polignac number, because 103634921 - 2² = 103634917 is a prime.

It is a super-3 number, since 3×103634921³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103634929) 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, 66926 + ... + 68456.

It is an arithmetic number, because the mean of its divisors is an integer number (7206528).

Almost surely, 2^103634921 is an apocalyptic number.

It is an amenable number.

103634921 is a deficient number, since it is larger than the sum of its proper divisors (11669527).

103634921 is a wasteful number, since it uses less digits than its factorization.

103634921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 103634921 is about 10180.1238204651. The cubic root of 103634921 is about 469.7160212992.

The spelling of 103634921 in words is "one hundred three million, six hundred thirty-four thousand, nine hundred twenty-one".