7638061 has 2 divisors, whose sum is σ = 7638062. Its totient is φ = 7638060.

The previous prime is 7638053. The next prime is 7638073. The reversal of 7638061 is 1608367.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6405961 + 1232100 = 2531^2 + 1110^2 .

It is a cyclic number.

It is not a de Polignac number, because 7638061 - 2³ = 7638053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7638011) 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 as a sum of consecutive naturals, namely, 3819030 + 3819031.

It is an arithmetic number, because the mean of its divisors is an integer number (3819031).

Almost surely, 2^7638061 is an apocalyptic number.

It is an amenable number.

7638061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7638061 is an equidigital number, since it uses as much as digits as its factorization.

7638061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 7638061 is about 2763.7042171694. The cubic root of 7638061 is about 196.9371766661.

The spelling of 7638061 in words is "seven million, six hundred thirty-eight thousand, sixty-one".