61797 has 4 divisors (see below), whose sum is σ = 82400. Its totient is φ = 41196.

The previous prime is 61781. The next prime is 61813. The reversal of 61797 is 79716.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (61781) and next prime (61813).

It is not a de Polignac number, because 61797 - 2⁴ = 61781 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10297 + ... + 10302.

It is an arithmetic number, because the mean of its divisors is an integer number (20600).

2⁶¹⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

61797 is a deficient number, since it is larger than the sum of its proper divisors (20603).

61797 is a wasteful number, since it uses less digits than its factorization.

61797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20602.

The product of its digits is 2646, while the sum is 30.

The square root of 61797 is about 248.5900239350. The cubic root of 61797 is about 39.5356725226.

It can be divided in two parts, 61 and 797, that added together give a palindrome (858).

The spelling of 61797 in words is "sixty-one thousand, seven hundred ninety-seven".