663002461 has 4 divisors (see below), whose sum is σ = 723275424. Its totient is φ = 602729500.

The previous prime is 663002449. The next prime is 663002467. The reversal of 663002461 is 164200366.

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 663002461 - 2⁵ = 663002429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663002467) 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, 30136465 + ... + 30136486.

It is an arithmetic number, because the mean of its divisors is an integer number (180818856).

Almost surely, 2^663002461 is an apocalyptic number.

It is an amenable number.

663002461 is a deficient number, since it is larger than the sum of its proper divisors (60272963).

663002461 is a wasteful number, since it uses less digits than its factorization.

663002461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60272962.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 663002461 is about 25748.8341677832. The cubic root of 663002461 is about 871.9770342442.

The spelling of 663002461 in words is "six hundred sixty-three million, two thousand, four hundred sixty-one".