1287774 has 24 divisors (see below), whose sum is σ = 2887560. Its totient is φ = 414288.

The previous prime is 1287761. The next prime is 1287787. The reversal of 1287774 is 4777821.

It is an interprime number because it is at equal distance from previous prime (1287761) and next prime (1287787).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712 + ... + 1755.

It is an arithmetic number, because the mean of its divisors is an integer number (120315).

2^1287774 is an apocalyptic number.

1287774 is an abundant number, since it is smaller than the sum of its proper divisors (1599786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1287774 is a wasteful number, since it uses less digits than its factorization.

1287774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504 (or 2501 counting only the distinct ones).

The product of its digits is 21952, while the sum is 36.

The square root of 1287774 is about 1134.8013041938. The cubic root of 1287774 is about 108.7960724325.

The spelling of 1287774 in words is "one million, two hundred eighty-seven thousand, seven hundred seventy-four".