1640608 has 24 divisors (see below), whose sum is σ = 3259872. Its totient is φ = 812736.

The previous prime is 1640599. The next prime is 1640609. The reversal of 1640608 is 8060461.

It is not an unprimeable number, because it can be changed into a prime (1640609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5191 + ... + 5497.

It is an arithmetic number, because the mean of its divisors is an integer number (135828).

2^1640608 is an apocalyptic number.

It is an amenable number.

1640608 is a deficient number, since it is larger than the sum of its proper divisors (1619264).

1640608 is a wasteful number, since it uses less digits than its factorization.

1640608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1640608 is about 1280.8622096073. The cubic root of 1640608 is about 117.9419421374.

The spelling of 1640608 in words is "one million, six hundred forty thousand, six hundred eight".