416661261 has 16 divisors (see below), whose sum is σ = 580386816. Its totient is φ = 265383536.

The previous prime is 416661233. The next prime is 416661277. The reversal of 416661261 is 162166614.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 416661261 - 2⁶ = 416661197 is a prime.

It is a super-2 number, since 2×416661261² = 347213212836220242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (416661221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64756 + ... + 70898.

It is an arithmetic number, because the mean of its divisors is an integer number (36274176).

Almost surely, 2^416661261 is an apocalyptic number.

It is an amenable number.

416661261 is a deficient number, since it is larger than the sum of its proper divisors (163725555).

416661261 is a wasteful number, since it uses less digits than its factorization.

416661261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152.

The product of its digits is 10368, while the sum is 33.

The square root of 416661261 is about 20412.2821115132. The cubic root of 416661261 is about 746.8975610815.

The spelling of 416661261 in words is "four hundred sixteen million, six hundred sixty-one thousand, two hundred sixty-one".