1264787 has 2 divisors, whose sum is σ = 1264788. Its totient is φ = 1264786.

The previous prime is 1264763. The next prime is 1264801. The reversal of 1264787 is 7874621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1264787 - 2¹² = 1260691 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (1264387) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632393 + 632394.

It is an arithmetic number, because the mean of its divisors is an integer number (632394).

2^1264787 is an apocalyptic number.

1264787 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264787 is an equidigital number, since it uses as much as digits as its factorization.

1264787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 1264787 is about 1124.6274938841. The cubic root of 1264787 is about 108.1448388202.

It can be divided in two parts, 126 and 4787, that added together give a cube (4913 = 17³).

The spelling of 1264787 in words is "one million, two hundred sixty-four thousand, seven hundred eighty-seven".