3646744745 has 16 divisors (see below), whose sum is σ = 5022725760. Its totient is φ = 2489887104.

The previous prime is 3646744733. The next prime is 3646744757. The reversal of 3646744745 is 5474476463.

It is an interprime number because it is at equal distance from previous prime (3646744733) and next prime (3646744757).

It is a cyclic number.

It is not a de Polignac number, because 3646744745 - 2⁴ = 3646744729 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3646744693 and 3646744702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215435 + ... + 231744.

It is an arithmetic number, because the mean of its divisors is an integer number (313920360).

Almost surely, 2^3646744745 is an apocalyptic number.

3646744745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3646744745 is a deficient number, since it is larger than the sum of its proper divisors (1375981015).

3646744745 is a wasteful number, since it uses less digits than its factorization.

3646744745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447424.

The product of its digits is 6773760, while the sum is 50.

The square root of 3646744745 is about 60388.2831764573. The cubic root of 3646744745 is about 1539.2238660896.

The spelling of 3646744745 in words is "three billion, six hundred forty-six million, seven hundred forty-four thousand, seven hundred forty-five".