1245866 has 8 divisors (see below), whose sum is σ = 1875744. Its totient is φ = 620620.

The previous prime is 1245863. The next prime is 1245877. The reversal of 1245866 is 6685421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1245863) 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, 380 + ... + 1623.

It is an arithmetic number, because the mean of its divisors is an integer number (234468).

2^1245866 is an apocalyptic number.

1245866 is a deficient number, since it is larger than the sum of its proper divisors (629878).

1245866 is a wasteful number, since it uses less digits than its factorization.

1245866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316.

The product of its digits is 11520, while the sum is 32.

The square root of 1245866 is about 1116.1836766411. The cubic root of 1245866 is about 107.6028509077.

It can be divided in two parts, 12458 and 66, that multiplied together give a palindrome (822228).

The spelling of 1245866 in words is "one million, two hundred forty-five thousand, eight hundred sixty-six".