1246705745 has 4 divisors (see below), whose sum is σ = 1496046900. Its totient is φ = 997364592.

The previous prime is 1246705723. The next prime is 1246705771. The reversal of 1246705745 is 5475076421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 242829889 + 1003875856 = 15583^2 + 31684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1246705745 - 2²⁶ = 1179596881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124670570 + ... + 124670579.

It is an arithmetic number, because the mean of its divisors is an integer number (374011725).

Almost surely, 2^1246705745 is an apocalyptic number.

It is an amenable number.

1246705745 is a deficient number, since it is larger than the sum of its proper divisors (249341155).

1246705745 is an equidigital number, since it uses as much as digits as its factorization.

1246705745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249341154.

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 1246705745 is about 35308.7205234061. The cubic root of 1246705745 is about 1076.2702115349.

The spelling of 1246705745 in words is "one billion, two hundred forty-six million, seven hundred five thousand, seven hundred forty-five".