7931648 has 18 divisors (see below), whose sum is σ = 15832824. Its totient is φ = 3965696.

The previous prime is 7931633. The next prime is 7931659. The reversal of 7931648 is 8461397.

It is a super-2 number, since 2×7931648² = 125822079991808, which contains 22 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, 15236 + ... + 15747.

Almost surely, 2^7931648 is an apocalyptic number.

It is an amenable number.

7931648 is a deficient number, since it is larger than the sum of its proper divisors (7901176).

7931648 is an equidigital number, since it uses as much as digits as its factorization.

7931648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30999 (or 30985 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 7931648 is about 2816.3181638444. The cubic root of 7931648 is about 199.4287700349.

The spelling of 7931648 in words is "seven million, nine hundred thirty-one thousand, six hundred forty-eight".