61958 has 8 divisors (see below), whose sum is σ = 100128. Its totient is φ = 28584.

The previous prime is 61949. The next prime is 61961. The reversal of 61958 is 85916.

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

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 61958.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166 + ... + 1217.

It is an arithmetic number, because the mean of its divisors is an integer number (12516).

2⁶¹⁹⁵⁸ is an apocalyptic number.

61958 is a deficient number, since it is larger than the sum of its proper divisors (38170).

61958 is a wasteful number, since it uses less digits than its factorization.

61958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398.

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

The square root of 61958 is about 248.9136396423. The cubic root of 61958 is about 39.5699769034.

The spelling of 61958 in words is "sixty-one thousand, nine hundred fifty-eight".