7638734 has 4 divisors (see below), whose sum is σ = 11458104. Its totient is φ = 3819366.

The previous prime is 7638733. The next prime is 7638767. The reversal of 7638734 is 4378367.

It is a semiprime because it is the product of two primes.

It is a d-powerful number, because it can be written as 7² + 6⁸ + 3⁶ + 8 + 7⁸ + 3¹¹ + 4⁷ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7638733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909682 + ... + 1909685.

It is an arithmetic number, because the mean of its divisors is an integer number (2864526).

Almost surely, 2^7638734 is an apocalyptic number.

7638734 is a deficient number, since it is larger than the sum of its proper divisors (3819370).

7638734 is a wasteful number, since it uses less digits than its factorization.

7638734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3819369.

The product of its digits is 84672, while the sum is 38.

The square root of 7638734 is about 2763.8259713665. The cubic root of 7638734 is about 196.9429606309.

The spelling of 7638734 in words is "seven million, six hundred thirty-eight thousand, seven hundred thirty-four".