61583791 has 8 divisors (see below), whose sum is σ = 64043280. Its totient is φ = 59146752.

The previous prime is 61583779. The next prime is 61583833. The reversal of 61583791 is 19738516.

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 61583791 - 2⁷ = 61583663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61583761) 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, 96 + ... + 11098.

It is an arithmetic number, because the mean of its divisors is an integer number (8005410).

Almost surely, 2^61583791 is an apocalyptic number.

61583791 is a deficient number, since it is larger than the sum of its proper divisors (2459489).

61583791 is a wasteful number, since it uses less digits than its factorization.

61583791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11225.

The product of its digits is 45360, while the sum is 40.

The square root of 61583791 is about 7847.5340712863. The cubic root of 61583791 is about 394.9015211424.

The spelling of 61583791 in words is "sixty-one million, five hundred eighty-three thousand, seven hundred ninety-one".