940066261 has 4 divisors (see below), whose sum is σ = 940131052. Its totient is φ = 940001472.

The previous prime is 940066243. The next prime is 940066321. The reversal of 940066261 is 162660049.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 650556036 + 289510225 = 25506^2 + 17015^2 .

It is a cyclic number.

It is not a de Polignac number, because 940066261 - 2⁵ = 940066229 is a prime.

It is the 30661-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940066961) by changing a digit.

It is a nontrivial repunit in base 30660.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511 + ... + 43363.

It is an arithmetic number, because the mean of its divisors is an integer number (235032763).

Almost surely, 2^940066261 is an apocalyptic number.

It is an amenable number.

940066261 is a deficient number, since it is larger than the sum of its proper divisors (64791).

940066261 is a wasteful number, since it uses less digits than its factorization.

940066261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64790.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 940066261 is about 30660.5000122307. The cubic root of 940066261 is about 979.6091253220.

The spelling of 940066261 in words is "nine hundred forty million, sixty-six thousand, two hundred sixty-one".