487991653 has 8 divisors (see below), whose sum is σ = 491463000. Its totient is φ = 484528128.

The previous prime is 487991633. The next prime is 487991657. The reversal of 487991653 is 356199784.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 143592289 + 344399364 = 11983^2 + 18558^2 .

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 487991653 - 2²¹ = 485894501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 487991653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487991657) 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, 180133 + ... + 182821.

It is an arithmetic number, because the mean of its divisors is an integer number (61432875).

Almost surely, 2^487991653 is an apocalyptic number.

It is an amenable number.

487991653 is a deficient number, since it is larger than the sum of its proper divisors (3471347).

487991653 is a wasteful number, since it uses less digits than its factorization.

487991653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911.

The product of its digits is 1632960, while the sum is 52.

The square root of 487991653 is about 22090.5331080986. The cubic root of 487991653 is about 787.2949478050.

The spelling of 487991653 in words is "four hundred eighty-seven million, nine hundred ninety-one thousand, six hundred fifty-three".