2061578 has 8 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 1013260.

The previous prime is 2061551. The next prime is 2061583. The reversal of 2061578 is 8751602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2061578.

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, 8618 + ... + 8853.

It is an arithmetic number, because the mean of its divisors is an integer number (393120).

2^2061578 is an apocalyptic number.

2061578 is a deficient number, since it is larger than the sum of its proper divisors (1083382).

2061578 is a wasteful number, since it uses less digits than its factorization.

2061578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17532.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2061578 is about 1435.8196265548. The cubic root of 2061578 is about 127.2721137571.

The spelling of 2061578 in words is "two million, sixty-one thousand, five hundred seventy-eight".