106060991 has 4 divisors (see below), whose sum is σ = 106105584. Its totient is φ = 106016400.

The previous prime is 106060987. The next prime is 106060993. The reversal of 106060991 is 199060601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 106060991 - 2² = 106060987 is a prime.

It is a super-2 number, since 2×106060991² = 22497867623804162, 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 (106060993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18515 + ... + 23556.

It is an arithmetic number, because the mean of its divisors is an integer number (26526396).

Almost surely, 2^106060991 is an apocalyptic number.

106060991 is a deficient number, since it is larger than the sum of its proper divisors (44593).

106060991 is an equidigital number, since it uses as much as digits as its factorization.

106060991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44592.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 106060991 is about 10298.5916998394. The cubic root of 106060991 is about 473.3531013477.

The spelling of 106060991 in words is "one hundred six million, sixty thousand, nine hundred ninety-one".