7715648 has 14 divisors (see below), whose sum is σ = 15310866. Its totient is φ = 3857792.

The previous prime is 7715633. The next prime is 7715657. The reversal of 7715648 is 8465177.

It can be written as a sum of positive squares in only one way, i.e., 7661824 + 53824 = 2768^2 + 232^2 .

It is a super-3 number, since 3×7715648³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60215 + ... + 60342.

Almost surely, 2^7715648 is an apocalyptic number.

It is an amenable number.

7715648 is a deficient number, since it is larger than the sum of its proper divisors (7595218).

7715648 is a wasteful number, since it uses less digits than its factorization.

7715648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120569 (or 120559 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 7715648 is about 2777.7055279493. The cubic root of 7715648 is about 197.6017571022.

The spelling of 7715648 in words is "seven million, seven hundred fifteen thousand, six hundred forty-eight".