7649738 has 4 divisors (see below), whose sum is σ = 11474610. Its totient is φ = 3824868.

The previous prime is 7649737. The next prime is 7649749. The reversal of 7649738 is 8379467.

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

It can be written as a sum of positive squares in only one way, i.e., 4870849 + 2778889 = 2207^2 + 1667^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7649737) 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, 1912433 + ... + 1912436.

Almost surely, 2^7649738 is an apocalyptic number.

7649738 is a deficient number, since it is larger than the sum of its proper divisors (3824872).

7649738 is a wasteful number, since it uses less digits than its factorization.

7649738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824871.

The product of its digits is 254016, while the sum is 44.

The square root of 7649738 is about 2765.8159736324. The cubic root of 7649738 is about 197.0374841708.

The spelling of 7649738 in words is "seven million, six hundred forty-nine thousand, seven hundred thirty-eight".