10781641 has 16 divisors (see below), whose sum is σ = 12265344. Its totient is φ = 9402624.

The previous prime is 10781623. The next prime is 10781651. The reversal of 10781641 is 14618701.

10781641 = T₆₅ + T₆₆ + ... + T₄₀₁.

It is the 1341-st star number.

It is a cyclic number.

It is not a de Polignac number, because 10781641 - 2⁷ = 10781513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10781611) 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, 31825 + ... + 32161.

It is an arithmetic number, because the mean of its divisors is an integer number (766584).

Almost surely, 2^10781641 is an apocalyptic number.

It is an amenable number.

10781641 is a deficient number, since it is larger than the sum of its proper divisors (1483703).

10781641 is a wasteful number, since it uses less digits than its factorization.

10781641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 10781641 is about 3283.5409240635. The cubic root of 10781641 is about 220.9165686314.

The spelling of 10781641 in words is "ten million, seven hundred eighty-one thousand, six hundred forty-one".