663031461 has 4 divisors (see below), whose sum is σ = 884041952. Its totient is φ = 442020972.

The previous prime is 663031427. The next prime is 663031471. The reversal of 663031461 is 164130366.

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 not a de Polignac number, because 663031461 - 2¹⁷ = 662900389 is a prime.

It is a super-2 number, since 2×663031461² = 879221436551589042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663031471) 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, 110505241 + ... + 110505246.

It is an arithmetic number, because the mean of its divisors is an integer number (221010488).

Almost surely, 2^663031461 is an apocalyptic number.

It is an amenable number.

663031461 is a deficient number, since it is larger than the sum of its proper divisors (221010491).

663031461 is a wasteful number, since it uses less digits than its factorization.

663031461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221010490.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 663031461 is about 25749.3972939174. The cubic root of 663031461 is about 871.9897476034.

The spelling of 663031461 in words is "six hundred sixty-three million, thirty-one thousand, four hundred sixty-one".