663653274 has 32 divisors (see below), whose sum is σ = 1339177344. Its totient is φ = 219248640.

The previous prime is 663653273. The next prime is 663653279. The reversal of 663653274 is 472356366.

It is not an unprimeable number, because it can be changed into a prime (663653273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361539 + ... + 363369.

It is an arithmetic number, because the mean of its divisors is an integer number (41849292).

Almost surely, 2^663653274 is an apocalyptic number.

663653274 is an abundant number, since it is smaller than the sum of its proper divisors (675524070).

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

663653274 is a wasteful number, since it uses less digits than its factorization.

663653274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342.

The product of its digits is 544320, while the sum is 42.

The square root of 663653274 is about 25761.4687857661. The cubic root of 663653274 is about 872.2622561136.

The spelling of 663653274 in words is "six hundred sixty-three million, six hundred fifty-three thousand, two hundred seventy-four".