1245561674 has 48 divisors (see below), whose sum is σ = 2208302208. Its totient is φ = 525305088.

The previous prime is 1245561659. The next prime is 1245561677. The reversal of 1245561674 is 4761655421.

It is not an unprimeable number, because it can be changed into a prime (1245561677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2689967 + ... + 2690429.

It is an arithmetic number, because the mean of its divisors is an integer number (46006296).

Almost surely, 2^1245561674 is an apocalyptic number.

1245561674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1245561674 is a deficient number, since it is larger than the sum of its proper divisors (962740534).

1245561674 is a wasteful number, since it uses less digits than its factorization.

1245561674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 852 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 1245561674 is about 35292.5158355139. The cubic root of 1245561674 is about 1075.9408886005.

The spelling of 1245561674 in words is "one billion, two hundred forty-five million, five hundred sixty-one thousand, six hundred seventy-four".