120081663 has 64 divisors (see below), whose sum is σ = 203212800. Its totient is φ = 69552000.

The previous prime is 120081649. The next prime is 120081677. The reversal of 120081663 is 366180021.

It is an interprime number because it is at equal distance from previous prime (120081649) and next prime (120081677).

It is not a de Polignac number, because 120081663 - 2⁸ = 120081407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120081763) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 478288 + ... + 478538.

It is an arithmetic number, because the mean of its divisors is an integer number (3175200).

Almost surely, 2^120081663 is an apocalyptic number.

120081663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

120081663 is a deficient number, since it is larger than the sum of its proper divisors (83131137).

120081663 is a wasteful number, since it uses less digits than its factorization.

120081663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 120081663 is about 10958.1779051081. The cubic root of 120081663 is about 493.3542774263.

The spelling of 120081663 in words is "one hundred twenty million, eighty-one thousand, six hundred sixty-three".