663170742 has 24 divisors (see below), whose sum is σ = 1547398944. Its totient is φ = 204052464.

The previous prime is 663170741. The next prime is 663170749. The reversal of 663170742 is 247071366.

It is a junction number, because it is equal to n+sod(n) for n = 663170697 and 663170706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663170741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1416798 + ... + 1417265.

It is an arithmetic number, because the mean of its divisors is an integer number (64474956).

Almost surely, 2^663170742 is an apocalyptic number.

663170742 is an abundant number, since it is smaller than the sum of its proper divisors (884228202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663170742 is a wasteful number, since it uses less digits than its factorization.

663170742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2834084 (or 2834081 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 663170742 is about 25752.1017006380. The cubic root of 663170742 is about 872.0508020721.

It can be divided in two parts, 663 and 170742, that added together give a triangular number (171405 = T₅₈₅).

The spelling of 663170742 in words is "six hundred sixty-three million, one hundred seventy thousand, seven hundred forty-two".