1445220705 has 8 divisors (see below), whose sum is σ = 2312353152. Its totient is φ = 770784368.

The previous prime is 1445220661. The next prime is 1445220727. The reversal of 1445220705 is 5070225441.

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

It is a cyclic number.

It is not a de Polignac number, because 1445220705 - 2⁷ = 1445220577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48174009 + ... + 48174038.

It is an arithmetic number, because the mean of its divisors is an integer number (289044144).

Almost surely, 2^1445220705 is an apocalyptic number.

1445220705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1445220705 is a deficient number, since it is larger than the sum of its proper divisors (867132447).

1445220705 is an equidigital number, since it uses as much as digits as its factorization.

1445220705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96348055.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 1445220705 is about 38016.0585147908. The cubic root of 1445220705 is about 1130.6062752802.

The spelling of 1445220705 in words is "one billion, four hundred forty-five million, two hundred twenty thousand, seven hundred five".