61348981 has 16 divisors (see below), whose sum is σ = 66067200. Its totient is φ = 56833920.

The previous prime is 61348979. The next prime is 61348993. The reversal of 61348981 is 18984316.

61348981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61348981 - 2¹ = 61348979 is a prime.

It is a super-2 number, since 2×61348981² = 7527394939476722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61348961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102120 + ... + 102718.

It is an arithmetic number, because the mean of its divisors is an integer number (4129200).

Almost surely, 2^61348981 is an apocalyptic number.

61348981 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

61348981 is a deficient number, since it is larger than the sum of its proper divisors (4718219).

61348981 is a wasteful number, since it uses less digits than its factorization.

61348981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its digits is 41472, while the sum is 40.

The square root of 61348981 is about 7832.5590326534. The cubic root of 61348981 is about 394.3989812899.

It can be divided in two parts, 613 and 48981, that added together give a palindrome (49594).

The spelling of 61348981 in words is "sixty-one million, three hundred forty-eight thousand, nine hundred eighty-one".