2564146 has 8 divisors (see below), whose sum is σ = 4142124. Its totient is φ = 1183440.

The previous prime is 2564143. The next prime is 2564147. The reversal of 2564146 is 6414652.

It can be written as a sum of positive squares in 2 ways, for example, as 2480625 + 83521 = 1575^2 + 289^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2564143) 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, 49285 + ... + 49336.

2^2564146 is an apocalyptic number.

2564146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2564146 is a deficient number, since it is larger than the sum of its proper divisors (1577978).

2564146 is a wasteful number, since it uses less digits than its factorization.

2564146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98636.

The product of its digits is 5760, while the sum is 28.

The square root of 2564146 is about 1601.2951008481. The cubic root of 2564146 is about 136.8718854889.

Adding to 2564146 its reverse (6414652), we get a palindrome (8978798).

The spelling of 2564146 in words is "two million, five hundred sixty-four thousand, one hundred forty-six".