61584091 has 8 divisors (see below), whose sum is σ = 63849744. Its totient is φ = 59354880.

The previous prime is 61584077. The next prime is 61584097. The reversal of 61584091 is 19048516.

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

It is not a de Polignac number, because 61584091 - 2⁵ = 61584059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61584097) 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 7 ways as a sum of consecutive naturals, for example, 5646 + ... + 12451.

It is an arithmetic number, because the mean of its divisors is an integer number (7981218).

Almost surely, 2^61584091 is an apocalyptic number.

61584091 is a deficient number, since it is larger than the sum of its proper divisors (2265653).

61584091 is a wasteful number, since it uses less digits than its factorization.

61584091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18221.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 61584091 is about 7847.5531855477. The cubic root of 61584091 is about 394.9021623840.

The spelling of 61584091 in words is "sixty-one million, five hundred eighty-four thousand, ninety-one".