61068381 has 32 divisors (see below), whose sum is σ = 94279680. Its totient is φ = 34795200.

The previous prime is 61068379. The next prime is 61068383. The reversal of 61068381 is 18386016.

It is an interprime number because it is at equal distance from previous prime (61068379) and next prime (61068383).

It is not a de Polignac number, because 61068381 - 2¹ = 61068379 is a prime.

It is a super-2 number, since 2×61068381² = 7458694315922322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61068383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45640 + ... + 46958.

It is an arithmetic number, because the mean of its divisors is an integer number (2946240).

Almost surely, 2^61068381 is an apocalyptic number.

61068381 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

61068381 is a deficient number, since it is larger than the sum of its proper divisors (33211299).

61068381 is a wasteful number, since it uses less digits than its factorization.

61068381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 61068381 is about 7814.6260947022. The cubic root of 61068381 is about 393.7967571585.

The spelling of 61068381 in words is "sixty-one million, sixty-eight thousand, three hundred eighty-one".