66941461 has 8 divisors (see below), whose sum is σ = 72042264. Its totient is φ = 61969920.

The previous prime is 66941443. The next prime is 66941507. The reversal of 66941461 is 16414966.

It can be written as a sum of positive squares in 4 ways, for example, as 844561 + 66096900 = 919^2 + 8130^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66941461 - 2¹⁵ = 66908693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66941461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66941401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31240 + ... + 33313.

It is an arithmetic number, because the mean of its divisors is an integer number (9005283).

Almost surely, 2^66941461 is an apocalyptic number.

66941461 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

66941461 is a deficient number, since it is larger than the sum of its proper divisors (5100803).

66941461 is a wasteful number, since it uses less digits than its factorization.

66941461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64631.

The product of its digits is 31104, while the sum is 37.

The square root of 66941461 is about 8181.7761519122. The cubic root of 66941461 is about 406.0364875359.

The spelling of 66941461 in words is "sixty-six million, nine hundred forty-one thousand, four hundred sixty-one".