61667243 has 16 divisors (see below), whose sum is σ = 69189120. Its totient is φ = 54482400.

The previous prime is 61667237. The next prime is 61667251. The reversal of 61667243 is 34276616.

It is not a de Polignac number, because 61667243 - 2⁴ = 61667227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61667273) 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, 93248 + ... + 93906.

It is an arithmetic number, because the mean of its divisors is an integer number (4324320).

Almost surely, 2^61667243 is an apocalyptic number.

61667243 is a deficient number, since it is larger than the sum of its proper divisors (7521877).

61667243 is a wasteful number, since it uses less digits than its factorization.

61667243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898.

The product of its digits is 36288, while the sum is 35.

The square root of 61667243 is about 7852.8493554887. The cubic root of 61667243 is about 395.0798172304.

The spelling of 61667243 in words is "sixty-one million, six hundred sixty-seven thousand, two hundred forty-three".