1251966 has 32 divisors (see below), whose sum is σ = 2654208. Its totient is φ = 393120.

The previous prime is 1251961. The next prime is 1251983. The reversal of 1251966 is 6691521.

Its product of digits (3240) is a multiple of the sum of its prime divisors (216).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9795 + ... + 9921.

It is an arithmetic number, because the mean of its divisors is an integer number (82944).

2^1251966 is an apocalyptic number.

1251966 is an abundant number, since it is smaller than the sum of its proper divisors (1402242).

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

1251966 is a wasteful number, since it uses less digits than its factorization.

1251966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216.

The product of its digits is 3240, while the sum is 30.

The square root of 1251966 is about 1118.9128652402. The cubic root of 1251966 is about 107.7781798342.

The spelling of 1251966 in words is "one million, two hundred fifty-one thousand, nine hundred sixty-six".