2563747 has 2 divisors, whose sum is σ = 2563748. Its totient is φ = 2563746.

The previous prime is 2563733. The next prime is 2563751. The reversal of 2563747 is 7473652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2563747 is a prime.

It is equal to p₁₈₇₃₉₆ and since 2563747 and 187396 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2563777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281873 + 1281874.

It is an arithmetic number, because the mean of its divisors is an integer number (1281874).

2^2563747 is an apocalyptic number.

2563747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563747 is an equidigital number, since it uses as much as digits as its factorization.

2563747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 34.

The square root of 2563747 is about 1601.1705093462. The cubic root of 2563747 is about 136.8647856962.

The spelling of 2563747 in words is "two million, five hundred sixty-three thousand, seven hundred forty-seven".