10977561 has 24 divisors (see below), whose sum is σ = 18249920. Its totient is φ = 6228576.

The previous prime is 10977559. The next prime is 10977581. The reversal of 10977561 is 16577901.

10977561 is a `hidden beast` number, since 1 + 0 + 97 + 7 + 561 = 666.

10977561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10977561 - 2¹ = 10977559 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10977511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9735 + ... + 10803.

Almost surely, 2^10977561 is an apocalyptic number.

It is an amenable number.

10977561 is a deficient number, since it is larger than the sum of its proper divisors (7272359).

10977561 is a wasteful number, since it uses less digits than its factorization.

10977561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 10977561 is about 3313.2402569086. The cubic root of 10977561 is about 222.2466822057.

The spelling of 10977561 in words is "ten million, nine hundred seventy-seven thousand, five hundred sixty-one".