2563767 has 12 divisors (see below), whose sum is σ = 3803800. Its totient is φ = 1662768.

The previous prime is 2563763. The next prime is 2563777. The reversal of 2563767 is 7673652.

It is a happy number.

It is not a de Polignac number, because 2563767 - 2² = 2563763 is a prime.

It is a Duffinian number.

2563767 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2563763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3517 + ... + 4182.

2^2563767 is an apocalyptic number.

2563767 is a deficient number, since it is larger than the sum of its proper divisors (1240033).

2563767 is a wasteful number, since it uses less digits than its factorization.

2563767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7742 (or 7739 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 2563767 is about 1601.1767547651. The cubic root of 2563767 is about 136.8651415931.

The spelling of 2563767 in words is "two million, five hundred sixty-three thousand, seven hundred sixty-seven".