10978645 has 4 divisors (see below), whose sum is σ = 13174380. Its totient is φ = 8782912.

The previous prime is 10978633. The next prime is 10978663. The reversal of 10978645 is 54687901.

10978645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8334769 + 2643876 = 2887^2 + 1626^2 .

It is a cyclic number.

It is not a de Polignac number, because 10978645 - 2⁹ = 10978133 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 10978598 and 10978607.

It is a congruent number.

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, 1097860 + ... + 1097869.

It is an arithmetic number, because the mean of its divisors is an integer number (3293595).

Almost surely, 2^10978645 is an apocalyptic number.

It is an amenable number.

10978645 is a deficient number, since it is larger than the sum of its proper divisors (2195735).

10978645 is an equidigital number, since it uses as much as digits as its factorization.

10978645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195734.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 10978645 is about 3313.4038389547. The cubic root of 10978645 is about 222.2539973545.

The spelling of 10978645 in words is "ten million, nine hundred seventy-eight thousand, six hundred forty-five".