663077546 has 4 divisors (see below), whose sum is σ = 994616322. Its totient is φ = 331538772.

The previous prime is 663077539. The next prime is 663077549. The reversal of 663077546 is 645770366.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 493062025 + 170015521 = 22205^2 + 13039^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 663077497 and 663077506.

It is not an unprimeable number, because it can be changed into a prime (663077549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165769385 + ... + 165769388.

Almost surely, 2^663077546 is an apocalyptic number.

663077546 is a deficient number, since it is larger than the sum of its proper divisors (331538776).

663077546 is a wasteful number, since it uses less digits than its factorization.

663077546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331538775.

The product of its (nonzero) digits is 635040, while the sum is 44.

The square root of 663077546 is about 25750.2921536825. The cubic root of 663077546 is about 872.0099501221.

The spelling of 663077546 in words is "six hundred sixty-three million, seventy-seven thousand, five hundred forty-six".