106663654 has 4 divisors (see below), whose sum is σ = 159995484. Its totient is φ = 53331826.

The previous prime is 106663631. The next prime is 106663657. The reversal of 106663654 is 456366601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 456366601 = 223 ⋅2046487.

It is a super-2 number, since 2×106663654² = 22754270169263432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106663657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26665912 + ... + 26665915.

It is an arithmetic number, because the mean of its divisors is an integer number (39998871).

Almost surely, 2^106663654 is an apocalyptic number.

106663654 is a deficient number, since it is larger than the sum of its proper divisors (53331830).

106663654 is an equidigital number, since it uses as much as digits as its factorization.

106663654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53331829.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 106663654 is about 10327.8097387587. The cubic root of 106663654 is about 474.2479756675.

The spelling of 106663654 in words is "one hundred six million, six hundred sixty-three thousand, six hundred fifty-four".