1263764 has 12 divisors (see below), whose sum is σ = 2224404. Its totient is φ = 628224.

The previous prime is 1263761. The next prime is 1263767. The reversal of 1263764 is 4673621.

It is an interprime number because it is at equal distance from previous prime (1263761) and next prime (1263767).

It can be written as a sum of positive squares in 2 ways, for example, as 144400 + 1119364 = 380^2 + 1058^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263761) 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, 47 + ... + 1590.

It is an arithmetic number, because the mean of its divisors is an integer number (185367).

2^1263764 is an apocalyptic number.

It is an amenable number.

1263764 is a deficient number, since it is larger than the sum of its proper divisors (960640).

1263764 is a wasteful number, since it uses less digits than its factorization.

1263764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834 (or 1832 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 1263764 is about 1124.1725846150. The cubic root of 1263764 is about 108.1156739592.

The spelling of 1263764 in words is "one million, two hundred sixty-three thousand, seven hundred sixty-four".