7650644 has 6 divisors (see below), whose sum is σ = 13388634. Its totient is φ = 3825320.

The previous prime is 7650631. The next prime is 7650647. The reversal of 7650644 is 4460567.

It can be written as a sum of positive squares in only one way, i.e., 6822544 + 828100 = 2612^2 + 910^2 .

It is a super-2 number, since 2×7650644² = 117064707229472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7650644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7650647) 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, 956327 + ... + 956334.

It is an arithmetic number, because the mean of its divisors is an integer number (2231439).

Almost surely, 2^7650644 is an apocalyptic number.

It is an amenable number.

7650644 is a deficient number, since it is larger than the sum of its proper divisors (5737990).

7650644 is a wasteful number, since it uses less digits than its factorization.

7650644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912665 (or 1912663 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 7650644 is about 2765.9797540835. The cubic root of 7650644 is about 197.0452626034.

The spelling of 7650644 in words is "seven million, six hundred fifty thousand, six hundred forty-four".