663367461 has 4 divisors (see below), whose sum is σ = 884489952. Its totient is φ = 442244972.

The previous prime is 663367459. The next prime is 663367477. The reversal of 663367461 is 164763366.

663367461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 663367461 - 2¹ = 663367459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663367261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110561241 + ... + 110561246.

It is an arithmetic number, because the mean of its divisors is an integer number (221122488).

Almost surely, 2^663367461 is an apocalyptic number.

It is an amenable number.

663367461 is a deficient number, since it is larger than the sum of its proper divisors (221122491).

663367461 is a wasteful number, since it uses less digits than its factorization.

663367461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221122490.

The product of its digits is 326592, while the sum is 42.

The square root of 663367461 is about 25755.9208920978. The cubic root of 663367461 is about 872.1370201912.

The spelling of 663367461 in words is "six hundred sixty-three million, three hundred sixty-seven thousand, four hundred sixty-one".