662506551 has 12 divisors (see below), whose sum is σ = 1093661712. Its totient is φ = 378575136.

The previous prime is 662506529. The next prime is 662506567. The reversal of 662506551 is 155605266.

It is a happy number.

It is not a de Polignac number, because 662506551 - 2¹⁷ = 662375479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662506511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5257926 + ... + 5258051.

It is an arithmetic number, because the mean of its divisors is an integer number (91138476).

Almost surely, 2^662506551 is an apocalyptic number.

662506551 is a deficient number, since it is larger than the sum of its proper divisors (431155161).

662506551 is a wasteful number, since it uses less digits than its factorization.

662506551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10515990 (or 10515987 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 662506551 is about 25739.2026100266. The cubic root of 662506551 is about 871.7595740209.

The spelling of 662506551 in words is "six hundred sixty-two million, five hundred six thousand, five hundred fifty-one".