1245446664 has 64 divisors (see below), whose sum is σ = 3881917440. Its totient is φ = 323492160.

The previous prime is 1245446663. The next prime is 1245446717. The reversal of 1245446664 is 4666445421.

It is a super-2 number, since 2×1245446664² = 3102274785737457792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1245446663) 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, 335124 + ... + 338819.

It is an arithmetic number, because the mean of its divisors is an integer number (60654960).

Almost surely, 2^1245446664 is an apocalyptic number.

1245446664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1245446664 is an abundant number, since it is smaller than the sum of its proper divisors (2636470776).

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

1245446664 is a wasteful number, since it uses less digits than its factorization.

1245446664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673970 (or 673966 counting only the distinct ones).

The product of its digits is 552960, while the sum is 42.

The square root of 1245446664 is about 35290.8864156173. The cubic root of 1245446664 is about 1075.9077716079.

The spelling of 1245446664 in words is "one billion, two hundred forty-five million, four hundred forty-six thousand, six hundred sixty-four".