2640548 has 6 divisors (see below), whose sum is σ = 4620966. Its totient is φ = 1320272.

The previous prime is 2640527. The next prime is 2640551. The reversal of 2640548 is 8450462.

It can be written as a sum of positive squares in only one way, i.e., 2439844 + 200704 = 1562^2 + 448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2640548.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330065 + ... + 330072.

It is an arithmetic number, because the mean of its divisors is an integer number (770161).

2^2640548 is an apocalyptic number.

It is an amenable number.

2640548 is a deficient number, since it is larger than the sum of its proper divisors (1980418).

2640548 is a wasteful number, since it uses less digits than its factorization.

2640548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660141 (or 660139 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 2640548 is about 1624.9763075196. The cubic root of 2640548 is about 138.2180268475.

The spelling of 2640548 in words is "two million, six hundred forty thousand, five hundred forty-eight".