7638101 has 4 divisors (see below), whose sum is σ = 7646604. Its totient is φ = 7629600.

The previous prime is 7638089. The next prime is 7638143. The reversal of 7638101 is 1018367.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5635876 + 2002225 = 2374^2 + 1415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7638101 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720 + ... + 4761.

It is an arithmetic number, because the mean of its divisors is an integer number (1911651).

Almost surely, 2^7638101 is an apocalyptic number.

It is an amenable number.

7638101 is a deficient number, since it is larger than the sum of its proper divisors (8503).

7638101 is a wasteful number, since it uses less digits than its factorization.

7638101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8502.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 7638101 is about 2763.7114538244. The cubic root of 7638101 is about 196.9375204477.

The spelling of 7638101 in words is "seven million, six hundred thirty-eight thousand, one hundred one".