7650664 has 48 divisors (see below), whose sum is σ = 17288100. Its totient is φ = 3161088.

The previous prime is 7650653. The next prime is 7650683. The reversal of 7650664 is 4660567.

It can be written as a sum of positive squares in 2 ways, for example, as 7606564 + 44100 = 2758^2 + 210^2 .

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 11032 + ... + 11704.

Almost surely, 2^7650664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7650664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8644050).

7650664 is an abundant number, since it is smaller than the sum of its proper divisors (9637436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7650664 is a wasteful number, since it uses less digits than its factorization.

7650664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 7650664 is about 2765.9833694366. The cubic root of 7650664 is about 197.0454343058.

The spelling of 7650664 in words is "seven million, six hundred fifty thousand, six hundred sixty-four".