2563615 has 8 divisors (see below), whose sum is σ = 3142080. Its totient is φ = 2007072.

The previous prime is 2563601. The next prime is 2563633. The reversal of 2563615 is 5163652.

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

It is a cyclic number.

It is not a de Polignac number, because 2563615 - 2¹⁷ = 2432543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5220 + ... + 5689.

It is an arithmetic number, because the mean of its divisors is an integer number (392760).

2^2563615 is an apocalyptic number.

2563615 is a deficient number, since it is larger than the sum of its proper divisors (578465).

2563615 is a wasteful number, since it uses less digits than its factorization.

2563615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10961.

The product of its digits is 5400, while the sum is 28.

The square root of 2563615 is about 1601.1292889708. The cubic root of 2563615 is about 136.8624367305.

It can be divided in two parts, 25636 and 15, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 2563615 in words is "two million, five hundred sixty-three thousand, six hundred fifteen".