3061640 has 16 divisors (see below), whose sum is σ = 6888780. Its totient is φ = 1224640.

The previous prime is 3061637. The next prime is 3061661. The reversal of 3061640 is 461603.

It can be written as a sum of positive squares in 2 ways, for example, as 2896804 + 164836 = 1702^2 + 406^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38231 + ... + 38310.

Almost surely, 2^3061640 is an apocalyptic number.

It is an amenable number.

3061640 is an abundant number, since it is smaller than the sum of its proper divisors (3827140).

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

3061640 is a wasteful number, since it uses less digits than its factorization.

3061640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76552 (or 76548 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 3061640 is about 1749.7542684617. The cubic root of 3061640 is about 145.2060487176.

The spelling of 3061640 in words is "three million, sixty-one thousand, six hundred forty".