663752029 has 8 divisors (see below), whose sum is σ = 727031160. Its totient is φ = 603165696.

The previous prime is 663752017. The next prime is 663752039. The reversal of 663752029 is 920257366.

It can be written as a sum of positive squares in 4 ways, for example, as 248692900 + 415059129 = 15770^2 + 20373^2 .

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 663752029 - 2⁵ = 663751997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663751982 and 663752000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663752039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672684 + ... + 673669.

It is an arithmetic number, because the mean of its divisors is an integer number (90878895).

Almost surely, 2^663752029 is an apocalyptic number.

It is an amenable number.

663752029 is a deficient number, since it is larger than the sum of its proper divisors (63279131).

663752029 is a wasteful number, since it uses less digits than its factorization.

663752029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346399.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 663752029 is about 25763.3854335955. The cubic root of 663752029 is about 872.3055196620.

The spelling of 663752029 in words is "six hundred sixty-three million, seven hundred fifty-two thousand, twenty-nine".