6261981 has 8 divisors (see below), whose sum is σ = 9108384. Its totient is φ = 3795120.

The previous prime is 6261977. The next prime is 6262007. The reversal of 6261981 is 1891626.

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

It is not a de Polignac number, because 6261981 - 2² = 6261977 is a prime.

It is a super-2 number, since 2×6261981² = 78424812088722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 189757 = 6261981 / (6 + 2 + 6 + 1 + 9 + 8 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6261901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94846 + ... + 94911.

It is an arithmetic number, because the mean of its divisors is an integer number (1138548).

Almost surely, 2^6261981 is an apocalyptic number.

It is an amenable number.

6261981 is a deficient number, since it is larger than the sum of its proper divisors (2846403).

6261981 is a wasteful number, since it uses less digits than its factorization.

6261981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189771.

The product of its digits is 5184, while the sum is 33.

The square root of 6261981 is about 2502.3950527445. The cubic root of 6261981 is about 184.3192021521.

The spelling of 6261981 in words is "six million, two hundred sixty-one thousand, nine hundred eighty-one".