61598 has 8 divisors (see below), whose sum is σ = 97320. Its totient is φ = 29160.

The previous prime is 61583. The next prime is 61603. The reversal of 61598 is 89516.

61598 is nontrivially palindromic in base 5.

61598 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61598.

It is a congruent number.

It is an unprimeable number.

61598 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773 + ... + 848.

It is an arithmetic number, because the mean of its divisors is an integer number (12165).

2⁶¹⁵⁹⁸ is an apocalyptic number.

61598 is a deficient number, since it is larger than the sum of its proper divisors (35722).

61598 is a wasteful number, since it uses less digits than its factorization.

61598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642.

The product of its digits is 2160, while the sum is 29.

The square root of 61598 is about 248.1894437723. The cubic root of 61598 is about 39.4931890195.

The spelling of 61598 in words is "sixty-one thousand, five hundred ninety-eight".