1245766 has 16 divisors (see below), whose sum is σ = 1963008. Its totient is φ = 592200.

The previous prime is 1245763. The next prime is 1245767. The reversal of 1245766 is 6675421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4261 + ... + 4543.

It is an arithmetic number, because the mean of its divisors is an integer number (122688).

2^1245766 is an apocalyptic number.

1245766 is a deficient number, since it is larger than the sum of its proper divisors (717242).

1245766 is a wasteful number, since it uses less digits than its factorization.

1245766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387.

The product of its digits is 10080, while the sum is 31.

The square root of 1245766 is about 1116.1388802474. The cubic root of 1245766 is about 107.5999719001.

1245766 divided by its sum of digits (31) gives a triangular number (40186 = T₂₈₃).

The spelling of 1245766 in words is "one million, two hundred forty-five thousand, seven hundred sixty-six".