106661401 has 8 divisors (see below), whose sum is σ = 132980544. Its totient is φ = 83112720.

The previous prime is 106661381. The next prime is 106661431. The reversal of 106661401 is 104166601.

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

It is a cyclic number.

It is not a de Polignac number, because 106661401 - 2⁵ = 106661369 is a prime.

It is a super-2 number, since 2×106661401² = 22753308926565602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106661431) 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 7 ways as a sum of consecutive naturals, for example, 692530 + ... + 692683.

It is an arithmetic number, because the mean of its divisors is an integer number (16622568).

Almost surely, 2^106661401 is an apocalyptic number.

106661401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

106661401 is a deficient number, since it is larger than the sum of its proper divisors (26319143).

106661401 is a wasteful number, since it uses less digits than its factorization.

106661401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385231.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 106661401 is about 10327.7006637489. The cubic root of 106661401 is about 474.2446365475.

The spelling of 106661401 in words is "one hundred six million, six hundred sixty-one thousand, four hundred one".