613978145 has 16 divisors (see below), whose sum is σ = 804503232. Its totient is φ = 446112960.

The previous prime is 613978133. The next prime is 613978147. The reversal of 613978145 is 541879316.

613978145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 613978145 - 2¹⁸ = 613716001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 613978096 and 613978105.

It is not an unprimeable number, because it can be changed into a prime (613978147) 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, 62114 + ... + 71316.

It is an arithmetic number, because the mean of its divisors is an integer number (50281452).

Almost surely, 2^613978145 is an apocalyptic number.

It is an amenable number.

613978145 is a deficient number, since it is larger than the sum of its proper divisors (190525087).

613978145 is a wasteful number, since it uses less digits than its factorization.

613978145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10432.

The product of its digits is 181440, while the sum is 44.

The square root of 613978145 is about 24778.5823847935. The cubic root of 613978145 is about 849.9322414268.

The spelling of 613978145 in words is "six hundred thirteen million, nine hundred seventy-eight thousand, one hundred forty-five".