101663401 has 4 divisors (see below), whose sum is σ = 116186752. Its totient is φ = 87140052.

The previous prime is 101663399. The next prime is 101663407. The reversal of 101663401 is 104366101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101663401 - 2¹ = 101663399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101663407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7261665 + ... + 7261678.

It is an arithmetic number, because the mean of its divisors is an integer number (29046688).

Almost surely, 2^101663401 is an apocalyptic number.

It is an amenable number.

101663401 is a deficient number, since it is larger than the sum of its proper divisors (14523351).

101663401 is an equidigital number, since it uses as much as digits as its factorization.

101663401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14523350.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 101663401 is about 10082.8270341209. The cubic root of 101663401 is about 466.7183518151.

The spelling of 101663401 in words is "one hundred one million, six hundred sixty-three thousand, four hundred one".