61566241 has 8 divisors (see below), whose sum is σ = 67577184. Its totient is φ = 55624320.

The previous prime is 61566209. The next prime is 61566269. The reversal of 61566241 is 14266516.

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 61566241 - 2⁵ = 61566209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61566541) 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, 15376 + ... + 18961.

It is an arithmetic number, because the mean of its divisors is an integer number (8447148).

Almost surely, 2^61566241 is an apocalyptic number.

It is an amenable number.

61566241 is a deficient number, since it is larger than the sum of its proper divisors (6010943).

61566241 is a wasteful number, since it uses less digits than its factorization.

61566241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34511.

The product of its digits is 8640, while the sum is 31.

The square root of 61566241 is about 7846.4158059588. The cubic root of 61566241 is about 394.8640048845.

The spelling of 61566241 in words is "sixty-one million, five hundred sixty-six thousand, two hundred forty-one".