10065981 has 8 divisors (see below), whose sum is σ = 13560064. Its totient is φ = 6641280.

The previous prime is 10065977. The next prime is 10065983. The reversal of 10065981 is 18956001.

It is a happy number.

10065981 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 10065981 - 2² = 10065977 is a prime.

It is a super-2 number, since 2×10065981² = 202647946984722, 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 (10065983) 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, 17005 + ... + 17586.

It is an arithmetic number, because the mean of its divisors is an integer number (1695008).

Almost surely, 2^10065981 is an apocalyptic number.

It is an amenable number.

10065981 is a deficient number, since it is larger than the sum of its proper divisors (3494083).

10065981 is an equidigital number, since it uses as much as digits as its factorization.

10065981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34691.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 10065981 is about 3172.6930201329. The cubic root of 10065981 is about 215.9162698447.

The spelling of 10065981 in words is "ten million, sixty-five thousand, nine hundred eighty-one".